Technology Trends

Cellular phones are taking a leap forward by offering camera phones with better picture resolution and MP3 players with plenty of memory, while offering these new features at prices lower than present models. In such a scenario, you can juice up your phone with several cellular phone downloads available on the internet.

Themes

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These cellular phone downloads are exchangeable skins and user interfaces for your cell phone. When you apply a new theme on your phone, it will get a totally new look. Not only does the wallpaper change, the menus and other bits of the interface might change as well. In addition a theme might contain a screensaver and a ringtone, to make the change complete. These cellular phone downloads are like getting a totally cool new phone for free.

Wallpapers

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These cellular phone downloads are another word for background or a logo. It’s an image you can use as a desktop background on your cellular phone. You can have these cellular phone downloads on your mobile phone through WAP (Wireless Application Protocol) or upload it by bluetooth, infrared (IR) or by using a cable. The cellular phone downloads can be obtained in the following image formats: jpg, gif and png. The screen on the cell phone has a resolution of 128×128 and higher so it’s best to use image cellular phone downloads that are exactly the correct size.

Videos

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These cellular phone downloads are 3GP videos that are small movies for your cell phone. It is like having your own portable movie player with you wherever you go. Although the image quality of these cellular phone downloads is sometimes uninspiring, seeing moving 3GP images on your cell phone can be quite cool. 3GP is based on the MPEG 4 (MP4) standard, and includes AMR for the audio soundtrack. These 3GP cellular phone downloads are a cool addition to your cellular phone.

Animations

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These cellular phone downloads are moving images (almost videos) that can be used in several ways on your phone. Such a gif animation can be used as a screensaver on your phone which activates when the phone is idle. These cellular phone downloads can also be used in picture messages (also known as MMS) which can be sent to your friends and family using your cell phone. Adding a cool screensaver to a phone and your picture messages is a popular way to customize it. Commonly, these cellular phone downloads are in gif format.

Ringtones

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These cellular phone downloads are different types of music files used as alerts on the mobile phone when receiving incoming calls. These cellular phone downloads can be customized and by doing this you get a personalized and cool cellular phone. There are many different types of ring tones but the most common format is midi (.mid extension). You get ringers in 4, 16, and 40 midi channels and most cellphones support at least 16. Another popular format is smaf (.mmf extension). These two cellular phone download types are called polyphonic ringtones. Newer mobiles support something called realtones or soundalikes. Realtones are music files stored in the popular mp3 format or as wav tones. You also get realtones in a format called amr and wbamr.

Games

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These cellular phone downloads are Java games that are interactive games for your cell phone. It is like having your own portable game console with you wherever you go. Although these cellular phone downloads used to be quite primitive, being only in black and white and with beeping sounds (like snake), the best of these cellular phone downloads now have great color graphics, sound and gameplay with well known characters.

Applications

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These cellular phone downloads are Java applications that are interactive software for your cell phone. It is like having your own portable computer with you wherever you go. Modern cellphone applications (usually in Java MIDP/midlet, Symbian SIS or Pocket PC format) can be quite advanced.

There are many ways to get the above accessories to your phone but the easiest is through cellular phone downloads from the internet through WAP. You can also carry out this cellular phone download from your pc through an infrared connection or by using Bluetooth if both your pc and phone support it. Many cellphones also have memory cards. If you have one and a memory card reader/writer for your pc, you can save these cellular phone downloads on the card and put them back in your phone. The last option is to transfer cellular phone downloads using a cable connection but usually mobile phones are delivered without such a cable.

According to recent studies, the demand for cellular phone downloads will triple within the next 12 months. According to a survey sponsored by LogicaCMG, 20% of mobile phone owners all over the world have already used cellular phone downloads, a percentage that is expected to grow 60% within the upcoming twelve months.

The study was carried out in Europe, Asia, North America and South America and has also revealed that monthly average of expenses with subscriber’s cellular phone downloads is currently 6.32 euros. About 40% of interviewees have expressed expected growth of cellular phone downloads for upcoming years. Ringtones, games and music are the three most popular cellular phone downloads.

Forty-one percent of the interviewees want to have the possibility of sharing the content of cellular phone downloads with their friends. Moreover, 17% of mobile phone users expect their phone carrier to provide network storage for all their cellular phone downloads.

Does how far you discharge your cell phone battery each time influence how long it lasts? You bet it does, but you should treat modern cell phone batteries the opposite way from older-generation cell phone batteries. Read on to learn why and how…

 

A lot has changed about cell phones and their batteries since cell phones first came out, and getting the most out of your cell phone’s battery these days takes a different pattern of care and usage than it did in the time of the old analog cell phones. When cell phones first shrunk down to the point where a phone could fit in someone’s pocket (the original analog Motorola flip phone), an “extended” battery, which might allow an hour and a half of talk time on a first-generation flip phone weighed more than the rest of the phone weighed.

 

The shrinking of cell phones to pocket size caused a significant boom in demand. Less than a decade later, when the first digital cell phones became available, the digital voice compression allowed cell phones to offer both longer battery life, and cheaper air time.

 

One thing has remained constant. People want their cell phone batteries to last as long as they can on each charge, and people want their cell phone batteries to have as long a life as they can before needing to replace the battery. Many people don’t realize it, but how you use your cell phone has a significant effect on how many months or years your battery lasts until it needs to be replaced, and how much talk time you will get on your phone each time you charge it.

 

There are different types of batteries, and each type needs to be treated differently to last a long time. Early-generation cell phones typically came with nickel cadmium batteries. Many early nickel cadmium batteries were prone to develop significant “memory”. The phenomenon of “memory” in batteries refers to a behavior of the battery where if the battery is typically only partly discharged (perhaps 25%) before it’s charged again, the battery will develop a chemical layering effect internally and will begin to behave as if it is dead when it gets 25% discharged.

 

For those early types of batteries, it was best to occasionally discharge the battery completely (for instance until the phone shut itself off) before recharging it. This tended to reduce the memory effect, and allowed the battery to last the longest, not only on each discharge cycle, but in terms of overall life as well.

 

Modern cell phone batteries are totally different. Modern cell phone batteries are typically lithium ion batteries. In contrast to nickel cadmium batteries, lithium ion batteries don’t have memory, and they don’t like to be deeply discharged. Lithium ion batteries are actually degraded much faster the deeper they are discharged on each cycle. While a lithium ion battery might last 600 discharge cycles if it is discharged only half way each time, it might only last 50 discharge cycles if you discharge it all the way every time to the point where the phone automatically shuts itself off.

 

A good rule of thumb if you want your cell phone battery to last a long time is not to discharge your battery past the point where only one quarter of the battery’s charge is left. Of course once your battery does eventually get to the point where it won’t hold a decent charge, there is one more good thing to know, and that is where to get an inexpensive replacement. My personal experience has been that the replacement batteries sold through eBay stores work just as well as the replacement batteries sold through cell phone stores, at between half and a quarter of the cost. Happy calling!

While the iPhone is the undeniable king of smartphones, security flaws in the operating system create vulnerabilities hackers can exploit to steal email, contact and personal data. Surprisingly, smartphone users are seemingly unaware of data security issues with their cellular phones. According to a recent Trend Micro report, respondents (44%) feel surfing the internet on their smartphone is just as safe as surfing the web on their computer, despite the fact that most smartphones offer no internet surfing security. What can you do to protect your iPhone? Use these tips:

1. Wifi Hotspots Attract Hackers - those bent on maliciously collecting information from laptop and smartphone users know that wifi hotspots offering broadband internet access to anyone are great places to troll for the unprotected equipment. When surfing at your local hot spot, make sure you know whose network you are connecting to. Reference the name of the hotspot and ask yourself if the name makes sense with the location. For instance, all Starbucks have a hotspot named “att” that requires validation through the iPhone’s Safari internet browser. Connecting to any other wifi network increases your risk of data theft.

2. Wifi Hotspot Login Page - many wifi hotspots require you to accept terms of service and login to a web page on your internet browser. While checking a box to accept terms of service is rather innocuous, no other information is typically collected (such as name, address, credit card number, etc) so be wary of any login process requesting such information. Also (more applicable to laptops) if the login page seems to be taking an extraordinary amount of time to load or appears to be loading a large file to your laptop or smartphone immediately disconnect your wireless internet connection as malicious software may be downloading to your device.

3. Password Protect Your Data - most smartphones provide a feature to password protect your device and the data inside it. This is typically enabled in a settings panel on the phone and requires the owner to enter a password before gaining access to phone data and functionality. While this might be annoying it is a great way to protect your data from theft, especially if your phone is lost or is left unattended in public for an extended period of time.

4. Layered Protection - exercising caution when connecting with wifi hotspots and password protecting your data is a great start, but you can increase your data protection with additional layers of security such as the Trend Micro application Trend Smart Surfing freely available on the iPhone application store that blocks users from accidentally visiting a site that could exploit an iPhone vulnerability.

These simple steps will greatly increase data security on your smartphone device and better protect you from identity theft. Also be certain to regularly update your smartphone or iPhone to receive the most up-to-date security patches made available from hardware manufacturers.

The Nokia 8800 Sirocco Edition is just an upgraded version of Nokia 8800. It is a slider phone encased within a stainless steel body. The 0.5 mega pixel camera of 8800 has been replaced by the 2.0 mega pixel, and the internal memory has been improved from 64 Mb to 128 Mb. These are the two minor changes which have been done in Nokia 8800 Sirocco black. In addition to this, you will also get an FM radio and an MP3 player with this handset.

The Nokia 8800 sirocco is little bit thicker than the older 8800, whereas the keypad and the case have been redesigned. If you consider the battery life, then it also has improved from 8800.

The handset is crafted so well that it makes a style statement and gives a different look from the other handsets. You can enjoy crystalline ringtones with 8800 Sirocco, which has been created by renowned composer Brian Eno. The signature thumb of this handset allows the user to slide open the cover with ease while making calls.

The camera of Sirocco 8800 can give you the best images with the resolution of 1600 x 1200 pixels. The digital music player of this phone supports MP3 and eAAC formats. In addition to this, it has an MMS (Multimedia Messaging Service), through which you can create, edit, receive and send messages along with the images, video or music.

Nokia Sirocco 8800 Black is Bluetooth enabled with an enhanced data rate, through which you can have a wireless connectivity with other Bluetooth compatible devices. It can be said that the 8800 Sirocco is meant for the people who are looking for a stylish phone along with the enhanced power packed feature.

Oozing with enticing designs, innovative features and cutting-edge technology - the Samsung mobile phones have earned accolades and dedicated following across the globe. Living up to the expectations of the millions of mobile phone users, the Samsung mobile phones have really come of an age and scaling the new heights of success with the release of each phone. Moving forth to satisfy the ever-increasing demands of the mobile phone users, the Samsung mobile manufacturing company introduced its yet another exciting mobile handset - the Samsung Z560 , which is exquisitely sleek and does carry loads of style with compatible features.

Well, the most important feature about the Samsung Z560 is that it supports high-speed HSDPA connectivity, which brings all the desired data in a real quick time. This technology is truly an enhanced form of mobile broadband, which helps to transmit data seven times faster than the WCDMA technology. Thus, you can also enjoy swift multimedia downloads comprising of DVD quality flicks and games. Offering 30MB of inbuilt memory with specified slot for microSD memory card, you would get exactly what you want.

The Samsung Z560 also boasts of a superb design and incredible dimensions of only 16mm, as you would not be able to believe that such a small gadget can support an exhaustive range of features and numerous functionalities. Providing you desired viewing experience, the Samsung Z560 comes with a big 2.3-inch QVGA colour LCD display, which provides you vivid and crisp images. Thus, do not bother about size, as the Samsung Z560 is quite big, considering its offerings.

Discover the latent photographer in you and grab the world around you with your very own Samsung Z560. Endowed with substantial camera features with a 2.0-megapixel camera and auto focus. So, never miss to click for those special moments and treasure them for the rest of your lives. This is just one cool feature, as the Samsung Z560 also allows you to listen to all your favourite music, as it is loaded with a digital music player. All your music is just one touch away, with dedicated music keys. Making various things possible, the Samsung Z560 is all set to elevate your mobile experience.

Have a look at Samsung Z560 .

Not surprisingly, 120,000 couples decide to perform their wedding vows in Las Vegas every single year. This article will discuss why many couples choose to have a cheap Las Vegas wedding, the variety of cheap Las Vegas wedding options available and the ultimate secret to planning and having a cheap Las Vegas wedding, while at the same time having the time of your life in Las Vegas.

Imagine being able to have a cheap Las Vegas wedding, knowing that you’ve got the lowest price for your cheap Las Vegas wedding while at the same time not scrimping on anything and having a once in a lifetime experience that will be the talk of the town and the envy of all your friends.

Some cheap Las Vegas weddings are planned at the spur of the moment while couples are on holiday in Vegas, while other couples take a lot of time to plan their perfect, ideal cheap Las Vegas wedding.

If Las Vegas appeals as the place to exchange wedding vows chances are you’re going to have a wedding memory to last a lifetime, not to mention the option of a very cheap Las Vegas wedding. Whatever reason you are planning your cheap Las Vegas wedding, it’s important to know that you don’t need to spend a fortune in Las Vegas. As a matter of fact, you can plan a cheap Las Vegas wedding that meets all your needs and every budget.

Here are some reasons why a cheap Las Vegas wedding is so appealing to thousands of honeymooners every year:

Cheap Las Vegas Wedding Reason 1. You can have a cheap Las Vegas wedding as soon as you get off the plane at Vegas. Unlike other parts of the USA there is no reason to delay a spontaneous Las Vegas wedding because no blood tests are needed and there are no waiting periods involved…a reason why many couples ultimately decide to have a cheap Las Vegas wedding.

Cheap Las Vegas Wedding Reason 2. It can be incredibly cheap to have a Las Vegas wedding. In fact, your Las Vegas wedding can be as cheap as paying for the marriage licence (around $60). Alternatively, you can have a cheap Las Vegas wedding for under $100.00 which includes the complete and ultimate Las Vegas wedding package - a witness, flowers, marriage licence and music. A cheap Las Vegas wedding can really be as simple and as inexpensive as that.

Cheap Las Vegas Wedding Reason 3. Not only does a Las Vegas wedding appeal to couples who are looking for a cheap but fun wedding option, it can equally be incredibly stress free for everyone involved. Las Vegas wedding chapels in fact cater to the bride and groom who only want to have fun in Vegas and absolutely no stress at all! Simply let the Las Vegas wedding chapel know when you want to get married, where, what time, what date and the Las Vegas wedding co-ordinator will do everything else for you. A Las Vegas wedding can really be as stress free, simple and as cheap as that.

Cheap Las Vegas Wedding Reason 4. Imagine the price of having your wedding in one of the beautiful and extremely expensive wedding destinations around the world like Venice, Rome, Paris & Egypt? No wonder romantics love the idea of a very cheap Las Vegas wedding in comparison. You can have an around the world romantic and very cheap Las Vegas wedding, the fraction of the cost of a trip around the world, for the cheap cost of a taxi ride as you view the stunning array of “world” hotels like Paris, Luxor, the Venetian & Caesar’s Palace, just to name a few. You can’t get a more romantic yet incredibly cheap wedding like you can in Las Vegas anywhere else in the world.

Cheap Las Vegas Wedding Reason 5. Las Vegas wedding organizations cater precisely for every budget and every wedding theme you can imagine, no matter how cheap you want your Las Vegas wedding to be. If you can’t afford to spend more than $100 on your cheap Las Vegas wedding then that’s as cheap as your Las Vegas wedding will be. Your cheap Las Vegas wedding is completely catered to your taste, your budget and your needs.

Now that I’ve convinced you why a cheap Las Vegas wedding is the right kind of wedding for you, it’s time for you to decide what kind of wedding reception venue you desire and how many guests you want to attend your cheap Las Vegas wedding. Many people would love to be a guest at your Las Vegas wedding, even if it’s cheap. On the other hand, you may love the idea of simply running away in secret, eloping and having the ultimate, romantic, cheap Las Vegas wedding.

I truly believe that Las Vegas is one of the bargain capitals of the world, especially if you’re planning a cheap Las Vegas wedding. It’s incredibly easy to plan a cheap Las Vegas wedding due to the fact that Las Vegas has what could be said to be the cheapest restaurants, hotels, and holiday attractions of anywhere in the USA. To find out how to have a cheap trip to Las Vegas, plus a cheap Las Vegas wedding, check out the website below to learn how to save over $500.00 planning your cheap Las Vegas trip and the ultimate cheap Las Vegas wedding of your dreams.

Mobile phones are so much necessary at present day world that it has become impossible to live without them. These days, most of the retailers and network providers are offering SIM free phones. Add to that, the mobile phone deals, inclusive of contract as well as pay-as-you-go, and the customer gets confused. However, Pay as you go vs Sim free phones discussion is always on its height, when we talk about deals and contracts.

The mobile phones are the best communicating devices one can easily afford for talking to their dear and near ones. There is a tremendous growth in the mobile phones world, which has given rise to so many new innovative technologies, advance features and great functioning. These mesmerising features have made mobile devices more useful and highly demanding among users. The great inventions of these amazing devices have lots of benefits in our day to day life. The Pay as you go and SIM free phones are the most popularly used concept at present.

The pay-as-you-go phones come with SIM that is Subscriber Identification Module, while the SIM free phones come without SIM. The pay-as-you-go phone deals are of great utility and they are at high demand at present. These are one of the best inventions in the telecommunication domain. These fantastic phone deals are in the market since nineteen century. These efficient devices have made communication more simple and fast. In Hartford bank, in 1889, the first pay phone was invented.

With the invention SIM free mobile phones, which are free from any network, the demand for pay phone decreased. The pay as you go mobile phone deals are quite popular amongst the teenagers and the users who do not use their mobile phones very often. One can take advantage of these effective deals, which allow the user to get a particular talk time beforehand, which they can use it for calling their family and friends. Another factor is that the users can also recharge their number when ever they want to make any emergency call. If you want some economical features and deals then the pay-as-you-go mobile phone deals are the best one for you. The pay-as -you-go mobile deals are highly affordable to users who do not want to spend so much and only require mobile phones to be in touch with the outer world, family and friends. And the most important is that these efficient deals will avoid your unwanted expenditure on the other deals which are highly costly.

Nowadays, SIM free mobile phones are very popular among customers. These are fantastic mobile devices which can be used by the user in the way they want. The SIM free mobile phones are free from any kind of deal and contract and the most important is they are free of any network. The users can choose any handset of his choice and can simply use the phone and enjoy its features by inserting a SIM. There are many companies which produce various amazing SIM free phones like Samsung, Motorola, Nokia and Sony Ericsson. The biggest advantage of Sim free mobile phones is that the users can even use them in the outer countries and can also switch to another connection of their choice if they are not satisfied by the connection they are using. Moreover, these amazing devices also offer you the facility of using the SIM card of the country you are going to visit to lessen the roaming charges.

It is very beneficial to use SIM free mobile phones as they are free of any network and deal, which allow user to change SIM according to their use and requirement. There are so many SIM free mobile phones one can go for to enjoy such amazing features which are highly demanding among the customers who visit outer countries very often. These wonderful deals are mostly used by the people who do not have trust in various contracts, suspects on their reliability and do not want to get bound with any type of contract and deal. The SIM free mobile phones have gained the trust with time as they have more benefits than any other deals. Mostly users go for SIM free mobile phones because they can be in touch with their loved ones even if they are outside the country.

Overall, both the Pay as you go and SIM free phones are best in their on way as one will choose the perfect deal according to his preferences and requirement.

There are many mobile phones that throng the mobile market and you can get confused in making a choice. There are the top class brands such as Nokia, LG, Samsung, Motorola and Sony Ericsson Mobile Phone among others with their super cool trendy handsets and the various features that can leave you gaping in awe. One seems to be better than the other. But stop awhile here and think over. You are about to make a good reliable purchase that serves your purpose faithfully and is long-lasting. You also need a mobile phone that suits your needs. Therefore before you buy a mobile phone for yourself, take the time to compare mobile phone before you make up your mind.

Begin your search

When you need to purchase a mobile phone and have the various brands before your eyes, log on to the internet and look up the websites of the leading mobile manufacturers such as Samsung, Nokia, LG, Motorola and Sony Ericsson among others and compare mobile phone as per their catalogues and listings. You can look at the details of the various models of phones displayed and make your decision when you compare mobile phone.

Making mobile phone comparisons

First select the budget that you will set aside for the purchase of your mobile phone and then compare mobile phone in the similar budget of the various brands

• Compare mobile phone in terms of the features that the brands offer.
• Compare mobile phones in size and color features
• Compare mobile phones and the ring tones, MMS, Radio FM, games, etc that come along with the mobile phones of the different brands
• Compare mobile phone in terms of tariff rates and plans
• Compare mobile phone and the acceptance capacity for GSM and other international facilities.
• Compare mobile phone in the hi-tech categories of the business mobile phone, the camera mobile phone and other features.
• Contact the mobile phone dealers who can assist you when you set out to compare mobile phone before you purchase one that best suits you.

The BlackBerry Storm smartphone is another example of touchscreen handset available on the market. Nevertheless the Storm has surpassed its rivals offering features and innovations not found anywhere else not to mention the email function which is extremely advanced and user friendly. This makes the Storm the most wanted and predicted mobile phone ever. However the other options have a little modified from the previous versions. This is due to SurePress, a structure which allows you to press the screen down to select a function, leading to a soft click. If you hold this telephone horizontally you get the SureType style keypad familiar to those who has used a BlackBerry Pearl smartphone, however when turning the phone on its side when the accelerometer adjust the screen automatically you get a full QWERTY keyboard which makes drumming out messages much more normal.

A swipe available in BlackBerry lets your finger scrolls around pages or through a picture gallery which makes it easier to navigate and watch.

The Storm is a 3G device and has support for HSDPA and EDGE and GPRS, so it makes web browsing quicker. BlackBerry browser has been significantly improved, so it’s miles better than prior incarnation. The data sending and email related features are simpler and quicker than any network you can think of.

With the Storm you get the 3.2 megapixel autofocus camera with an LED flash, an extraordinarily capable music and video player, a 3.5mm jack plug for your own headphones and the assisted GPS receiver complete with BlackBerry Maps. Excellent it does everything imaginable and then some. Glorious style. Stunning looking piece of technology. When you have one you will start to wonder how you ever managed without one.

Modern chemistry attempts to produce new materials which through their various characteristics and properties can be better used for all types of purposes. One prerequisite of choosing the necessary chemical reactions necessary to synthesise some new product is a detailed knowledge of the structure of the reactants and their characteristic properties, including some knowledge of the course of the chemical reactions and the mechanisms which make them go and influence them.

A chemical reaction is a change in molecules and elements which results in new molecules with new properties being formed. The course of a reaction is described by a chemical equation. The materials which react together are called reactants; the materials which are formed in a reaction are called products. A reaction equation, or a chemical equation, is used to abbreviate and symbolise a chemical reaction. The reactants, the materials which begin a chemical reaction, are written on the left side of a chemical equation, in front of an arrow, and the products are written on the right side of this arrow:

Fe(s) + S(s) ® FeS(s)

Iron (in the carbon group) and sulphur (same group) react to produce iron sulphide.

In many reactions, the state of matter of the materials changes. For this reason, whether the material, either reactant or product, is in the solid (s), liquid (l), or gaseous (g) state is indicated with the corresponding lower case letter, in parentheses as above. If a reaction results in the amount of products being less than reactants, we call this a combination, or synthesis reaction. If there are more products than reactants, this is a dissociation, or breakdown reaction.

Energy and Chemical Reactions

Elements try to attain a state which is the most natural or most energetically advantageous for them, that is, one where the outermost electron shells are filled. For this reason, electrons are very often transferred between atoms, either donated or accepted. Some elements donate their electrons more easily, while some elements accept electrons more readily. In extreme cases, the electrons of one atom are completely transferred to an atom of another or the same element. But most of the time, electrons are not completely transferred, but rather shared between two atoms, though those electrons may be attracted to one of the atoms more strongly than the other. This is a chemical bond.

The most ideal state for atoms and molecules is always that state with the lowest energy. In most chemical reactions, then, the energy that was included in higher-energy bonds is released to the surroundings. But in order for such an energy-releasing reaction to occur, the reactants must be infused with enough energy to break the original bonds and allow the formation of new ones. Most of the time, a certain amount of energy has to be added to the system (usually in the form of heat), to start the reaction, or to make it go. This energy is called the activation energy of a reaction.

In order for new compounds to be formed, the bonds of the reactants must first be broken. An activation energy must be introduced into the system. This helps in the formation of new bonds which are more energetically favourable for the atoms and molecules involved in the reaction. If a reaction evolves more energy than was necessary to begin it (activation energy), this reaction proceeds on its own, resulting in the release of some energy to the surroundings.

This is an exothermic reaction. If, however, the energy released in forming new compounds is less than its activation energy, energy must be constantly added as the reaction proceeds. This type of reaction does not proceed on its own. It is an endothermic reaction.

The energy released can be in the form of heat, but it can be light or electricity, too. The variety of energetic phenomena released by chemical reactions is called heat of reaction.

Every chemical reaction goes at its own pace (reaction rate). Influencing this rate is very important in chemistry. The concentration of individual reactants and products can be determined, as can changes in heat and temperature. In gaseous state of matter reactions, reaction rate can be influenced by pressure, with higher pressures resulting in more rapid reactions. Reaction rate increases as the concentration of reactants increases, too. Greater temperature also causes reaction rate to rise. A rise of 10 Kelvin (= 10° C) causes reaction rate to double.

Reaction rate is also markedly influenced by the size of the surface on which reactants are allowed to react. In other words, if reactants are divided into smaller particles, a reaction proceeds more quickly than if reactants are left in bulk. Formation of Ions

In many compounds, atoms form what is called an ionic bond. In this type of bonding, electrons in one atom’s outer shell are transferred from that atom to another, which accepts them. This is a complete transfer. The atom which accepts the electron or electrons completely fills its outer shell, thus attaining a noble gas electron configuration. The donor atom, the one which gives up its electrons, also attains a noble gas electron configuration (at a lower energy level) by emptying its most outer shell.

The transfer of negatively charged electrons leads to an excess of positively charged protons in the donor atom, thus forming an ion which is overall charged positively (cation). The second atom, the one which accepts the electron or electrons, becomes a negatively charged ion (anion). An ionic bond is based on the electrostatic attraction of two ions of opposite charges.

Salts make up a great percentage of the compounds which form ionic bonds. They are composed of atoms or molecules with a positive charge (cations) and the second half of an acid, which is a negatively charged anion. The reaction mechanism begins when an atom (or atoms) of hydrogen escape the acid, forming a positive ion. This positively charged hydrogen atom is replaced with another cation (or cations).

For example: HCl (hydrochloric acid) + NaOH (sodium hydroxide) = NaCl (table salt)+ H2O (water)

The valence of a salt is given by the number of hydrogen ions which are able to be transferred in a given reaction.

In the above reaction, just one hydrogen ion is replaced by one sodium ion, forming sodium chloride (table salt, NaCl). For this reason, table salt has one valence. Salts are soluble (able to dissolve) in water, and they have high melting and boiling points. Salts, when they are found in the solid state of matter, are crystalline in form.

Ionic compounds are usually spatially repeating molecules. In other words, they form crystals. Crystals can grow out of, or crystallise from, a saturated solution (from a solution which has exceeded its maximum solubility, where there is more salt than can be dissolved). Or, crystals can be grown from the transformation of an amorphic material (from a material without a regular crystalline structure).

What is the difference between a crystal and an amorphous material? Amorphous materials are not repeating, fixed, regular structures. On the other hand, crystalline structures have completely determined inner arrangements - their crystal lattice.

Every crystal has specific angles which together form the sides of that crystal. These repeat in a formation, with proportions which are highly specific.

Other types of bonds can be integrated into a crystal lattice, as its constituent parts. Crystals can be of various shapes and sizes. These varying crystalline structures, with their different forms and sizes, are what differentiates atoms, molecules and ions. It all depends on the exact geometric arrangement of a crystal, with its defined borders and in some cases sharp angles. The ideal crystal lattice is a thing of beauty, in which all of the points of the lattice are perfectly arranged in their natural places. In reality, however, such perfect crystals are quite rare. Most of the time, crystals which occur in nature are imperfect. Some points on the crystal lattice contain components which do not belong. Sometimes, the lattice is quite flawed.

The growth of a crystal or crystals is dependent on external factors, such as temperature, the natural speed of crystal growth, solution concentration, the amount of crystallising material and the presence, if any, of foreign material in the solution.

Crystals can be described with the help of two terms:

Proportion of Crystal and Type of Crystal

Agglomerates which appear from various materials can combine to form a complex, varied, imperfect crystalline structure.

Crystals can also be differentiated according to their crystal lattice. According to this criterion, there are simple crystals, in which individual points of the crystal lattice are occupied by parts of the same kind. The growth of a crystal can be imagined as a kind of regular swelling, on all sides, at its walls and edges. Besides those, there are complex crystals which are composed of multiple simple crystals.

Crystals can be investigated by structural analysis procedures. There are 7 basic types of crystal lattices and 7 other derivatives of these. All together, around 1000 crystalline structures are presently known.

Polymorphic crystals can appear in various forms. Materials which are formed from crystals can actually change their crystal lattice depending on temperature. Graphite (a component of pencil leads) and diamond are both modifications of the crystalline structure of the carbon atom ( C ). The differing characteristics come from differing attractions and forces between the various atoms.

An allotrope (allos from the Greek - different, trope - change) is a compound which is able to take on various forms.

Monotropes are those crystals that can be arranged in various ways, but only one of these is stable. The other forms, when they are present, tend to transform into this most stable form. Since temperature differences are not relevant to this situation, these transformations may not be considered as temperature based. While allotropic materials can be found in a variety of forms, monotropes, on the other hand, will sooner or later transform to one, most stable form.

Enantiotropes are those crystals which have the ability to change their crystal lattices as a function of temperature. As temperature rises or falls, these crystals change their crystalline arrangements. One lattice exists above a certain temperature, with another in place below that critical temperature. Most of the time, these critical temperatures are very high. Of interest are a number of forms of iron which are assumed during production.

Isomorphs are those substances which share the same crystalline structure, although they are completely different compounds.

One of the simplest crystalline structures is the one which characterises table salt (NaCl). Its structure is that of a cube which has at its corners ions of chlorine. Sodium ions are at the centres of the sides and in the centre of the cube.

Electron Pairs, Covalent Bonds

Bonds between atoms or in some cases molecules can be different. Paired, covalent bonds are found in non-metallic molecules. The atoms in the molecules of basic gases such as oxygen, nitrogen and hydrogen are all joined together with covalent bonds. These types of bonds have atoms connected with the help of the electrons in the outermost shell. The result is the union of two electrons to form an electron pair. Negatively charged, bonded electrons are attracted to the positively charged nuclei of both atoms. Because both of the nuclei must now share the electrons, they stick together, joined by the union of their electrons, an electron pair.

Each of the two atoms, then, seemingly has one or more electron extra. The bond between the atoms is based on the attraction of the two nuclei of the atoms to the shared electron pair. The shared electrons belong to both atoms at the same time. All atoms, in whatever state they are found, have the tendency to want to fill their outer electron shells. In the hydrogen molecule (H2), each hydrogen atom has two electrons associated with it, in its one and only outermost shell. (An isolated hydrogen atom has only one electron.) When, however, two hydrogens are bonded together, they achieve the electron configuration of the second element, helium (He).

Covalent bonds are very stable, because the atoms involved in a covalently bonded compound fill their outermost shells completely, bringing the atoms to their most energetically desirable state. This type of electron arrangement is equivalent to that of a noble gas, because all of the noble gases have a stable electron configuration (filled outermost electron shell). Also, molecules of chlorine, oxygen and nitrogen can reach the stable electron configuration in their outermost shell - by bonding with another atom of their own kind. That is, two chlorines bonded together, two oxygens, two nitrogens.

In order to reach the noble gas electron configuration, it is often necessary to fill various spaces in the outermost electron shell. In this case, multiple electron pairs are needed to fill these “holes”. In the oxygen molecule, two electron pairs are needed, with the nitrogen molecule three. This is necessary because all atoms taking part in these types of bonding reactions need either 2 electrons in their outermost shell (elements in the first energy level, or period, of the periodic table: H and He) or 8 (other groups of the periodic table which are at the right end). These atoms which have incomplete outermost electron shells must attract other electrons, from other atoms, to fill their shells completely. An atom like oxygen can join with two atoms, forming an electron pair with each of them, or it may join with one other atom to form two electron pairs with the one atom, called a double bond. There are also triple bonds. Carbon (C) is capable of forming single, double and triple bonds.

In a covalent bond, a shared electron pair in a molecule is attracted to both nuclei on both sides equally strongly, but only if the two atoms sharing that pair are the same. Attractive force depends on the charge of the atomic nucleus and on the amount of electrons in the atom’s electron cloud. The ability to attract electrons by an element was called electronegativity (EN) by L. Pauling (American chemist).

The quantity electronegativity is defined as the comparative ability of an atom to be attracted to an individual atomic nucleus. In other words, the flourine atom attracts bonded electrons most strongly of all atoms. It was therefore assigned the highest electronegativity of all elements - 4.0. Electronegativity values of all the elements can be found in the periodic table. In every period, every horizontal row of the periodic table, electronegativity rises from left to right across the period, with rising number of protons, or atomic number. On the other hand, in the main groups, as we move down the periodic table from top to bottom, or vertically, electronegativity decreases. So, the element with the largest value of electronegativity must logically be found in the top right of the period table. Besides the noble gases, which have their outermost electron shells filled, and do not need electrons, the element which attracts electrons most readily is flourine (F), with a value of 4.0. At the other end of the periodic table, bottom left, are elements with the lowest electronegativity (Fr 0.7).

In compounds composed of two different atoms, an electron pair is not shared equally among the two. Instead, it is attracted to the two sides with different attractive force, based on the atoms’ differing electronegativities. In the molecule hydrogen chloride (HCl), the hydrogen atom and the chlorine atom share one electron pair. But because of the greater size of the chlorine nucleus, this electron pair is more strongly attracted by the chlorine nucleus than by the hydrogen nucleus. In addition, the chlorine atom has another 6 electrons in its outermost shell. These are arranged into three electron pairs - all unbonded. For this reason, the chlorine atom has an overall negative charge to it, if only a partially negative charge. The hydrogen atom, on the other side, has the same value of partial positive charge. The molecule HCl, or hydrogen chloride, with its partial positive side (hydrogen) and its partial negative side (chlorine) is said to have a dipole, or dipole moment. This means that the one pair of shared electrons is not shared equally. In this case, the pair is closer to the chlorine atom. It is partially negatively charged because it now has more electrons than it has protons in its nucleus. Hydrogen, on the other side, has less electrons than it has protons, and is therefore positive. Bonded electrons are written as a dash, a short line between two element symbols, or between molecular chemical formulas. This type of designation is called a valence formula.

The electronegativity of an element is determined by the amount of protons it has in its nucleus, as well as the number of electrons it contains in its outermost shell. Thanks to the partial transfer of a bonded electron pair to the more electronegative atom in a molecule, that molecule can have a positive and negative side. These sides are called poles, and if they differ in a significant way, the molecule is said to have a dipole. The result is a molecule with one side positive, one side negative. This can, of course, affect neighbouring molecules, attracting or repelling them if they are partially charged. The water molecule has a partial negative charge, found on the oxygen atom. The two hydrogen atoms have a partial positive charge.

Both free electron pairs in the oxygen atom attract the centre of a partially positively charged neighbouring molecule with their electromagnetic attractive force. This type of bonding is called hydrogen bonding. Each molecule of water hydrogen bonds with other water molecules, aligning so as to produce a positive, negative repeating pattern. The positive side is hydrogen, the negative oxygen. This phenomenon, hydrogen bonding in water, explains water’s high surface tension. This means that the molecules on the surface are weakly bonded to the rest of the liquid, by these hydrogen bonds. For that reason, water, even at relatively high temperatures, is still a liquid, whereas other similar molecules have already changed to the gaseous state.

Bonds between atoms can be depicted in various ways:

H : H formula with points, or dots, indicating electrons

H - H or with hydrogen chloride H Cl valence formula

H2 HCl chemical formula of the molecule

Acids, Bases, Salts

Intermolecular Forces

Most inorganic compounds are categorised as either acids, bases or salts. S. Arrhenius (Swedish physical chemist) came up with one of the most often used definitions for an acid.

According to that definition, acids are materials which when dissolved in water release hydrogen cations (atoms of hydrogen with a positive charge). Bases, on the other hand, are materials which release hydroxide anions (negatively charged compounds of one atom oxygen, one atom hydrogen) into solution when dissolved.

Salts are made of atoms or molecules, with one side positively charged, the other negatively charged.

They are formed from an acid when that acid gives up its hydrogen atoms with their positive charges, only to replace the hydrogen with the ion from a metal.

A number of acids and bases were known long before their chemical makeups and reaction mechanisms were known. As pure substances they are not distinguishable from each other. So, acids have to be dissolved in water in order for chemists to determine their characteristic properties. Acids begin to react when placed in water. In an aqueous solution the ions of an acid separate from each other, into a hydrogen cation and the corresponding anion. Both of these ions, free in the water, interact with it. In essence, water molecules surround the ions, creating what is called hydrated ions. So, a hydrogen ion does not remain isolated, but undergoes a hydration reaction to produce a positively charged “water” molecule, in the reaction H2 O + H+ = H3O+. These ions cause a solution to be acidic in character, and cause the colour of an indicator to change, indicating an excess of H3O+

ions in solution. (An indicator is a substance which can differentiate whether an acid or base is present in a solution.) In addition, ions in solution cause a solution to conduct electricity, or be conductive.

When a base is dissolved in water, positive ions are released into solution, and so are negatively charged hydroxide ions. A solution which contains hydroxide ions is a basic solution, or an alkaline solution. Just like with acids, the ions released into solution are hydrated, or surrounded by water. These solutions also conduct an electric current. Basic solutions also affect the colour of an indicator, and can produce basic salts when reacted with acids. Bases are basically lattices of ions. Their solids can also conduct an electric current.

According to the Brönsted-Lowry theory of acids and bases, any compound which releases a proton, or a hydrogen atom, into solution is an acid. Any compound which accepts a proton is considered a base. Solutions which contain dissolved bases and acids, because they release protons or hydroxide ions, conduct electricity.

The chemical process in which an electrical current runs through a solution is called an electrolysis. Bonds are broken in the process due to the electrolysis, with new substances being formed on the ends of the conductors, or electrodes.

Electrolysis reactions require the kinds of solutions which contain dissociated ions, allowing the solution to carry an electrical current.

During the electrolysis of an ionic solution, negatively charged ions (anions) migrate to the positively charged electrode (anode), while positively charged cations migrate to the negatively charged electrode, the cathode. In the case of an acidic or basic solution, positive ions migrate to the cathode (the end of the electrode with a negative pole), whereas the negative hydroxide ions swim to the anode (electrode with a positive pole). In these types of solutions (called electrolytic), there is no movement of electrons as in a crystal lattice, but rather movement of free swimming ions to the corresponding electrode. The number of ions is the determining factor as to whether, and how well, a solution conducts electricity.

The volume of hydrogen ions in a solution is measured as the value of the pH of a solution. The value of pH is the negative base ten logarithm giving the concentration of protons (hydrogen (H), measured from 0 to 14. A pH of O means that the concentration of hydrogen = 1, while a value of 14 means a concentration of 0.00000000000001. Solutions with a pH from 0-7 are acidic.

The acidic character of a solution decreases with rising pH. At a pH of 7, a solution is neutral. As pH rises from 7, so does the alkalinity of a solution. At a pH of 7, there are the same amount of hydrogen ions as hydroxide ions.

Indicators are used in order to determine the acidic or basic character of a reaction. These substances have to have the property of changing their colour in the presence of an acidic or basic solution. For example, litmus paper changes its colour to blue in a basic solution. In a neutral solution, it is pink. In a basic solution, it is red. Colour changes differ from one indicator to another, but are characteristic for one specific indicator. With the right choice of an indicator, pH can be fairly accurately determined.

The degree with which an acid releases hydrogen ions into solution depends on the concentration of an acid. The stronger an acid, the more protons it releases into solution, and the more negative ions as well. Two well-known strong acids are sulfuric acid and hydrochloric acid (HCl). Weak acids, on the other hand, do not release as many ions into solution. In other words, they do not dissociate as completely. Examples of weak acids include citric acid and acetic acid.

If we mix an acidic solution with an equally strong basic solution in the same proportions, the resulting solution will be neutral. This is called a neutralisation reaction. In a neutralisation reaction, hydrogen ions are neutralised by hydroxide ions - forming water - and a salt. Heat is also released during neutralisation reactions.

Many chemical reactions that seem not to be working or go at an extremely slow pace can be accelerated by addition of a small amount of some material. The material, called a catalyst, is added to the reactants. A reaction which requires a catalyst is said to be catalysed.

Catalysts take part in a reaction, but they are not used up by the reaction and are unchanged by the reaction. In the type of reaction which requires a catalyst, the reactants would react either too slowly or not at all. In other words, a catalyst gives the system a boost, an increase in activisation energy. The presence of a catalyst in a chemical reaction makes the reaction easier, or in some cases, possible at all: A catalyst takes part in a reaction by reacting with one of the original reactants to form a an intermediate product, which goes on to produce the required end product. One possibility is that one of the reactants, with the help of interaction with a catalyst, acquires new spatial dimensions or other characteristics which make it more reactive with another of the reactants. We differentiate between homogeneous catalysts, which are the same state of matter as the other reactants, and heterogeneous catalysts, where the catalyst is in a different state of matter.

In theory, the concept of mobile payments has a strong business case, given the high market penetration rates of mobile devices, such as cellular phones and PDA?s, in many parts of the world. In addition, mobile operators and financial institutions, through the use of these devices, envision an attractive way to enable their customers to make payments. On the consumer side, users can reap the benefits of convenience, permitting them to buy goods and services from any location.

In principle, a mobile device can be used as a POS (point of sale) tool. Mobile operators and financial institutions consider this concept as the next logical step in making mobile devices a trusted payment device for consumers, acting as a payment instrument supplementing cash, cheque, credit card and debit card.

Currently, financial institutions are rolling out wireless POS capabilities to merchants which are in-turn competing with a consumer?s mobile phone. Several new services have been introduced around the world in which merchants are accepting payments from wireless POS terminals. These wireless POS terminals, for example, allow merchants to offer home delivery services in which payments are presented and accepted upon delivery of goods or services at the consumer?s location.

Wireless POS terminals use the wireless networks of mobile operators to send payment instructions to a merchant acquirer?s payment server. Consequently, wireless POS services are classified as an extension of traditional payment services. Given that in some areas of the world almost everyone will soon own a mobile phone, and most merchant locations offer POS terminals as a form of payment, it is at least conceivable that the mobile device will take over a large part of the retail payment market.

Since wireless POS implementations are an extension of current payment infrastructures, users still need to use a credit or debit card to make purchases. The convenience associated with current wireless POS methods have to do with the fact that these terminals are brought to the location of the purchase. For example, in a restaurant environment with the user paying for their bill via debit card from their seat, or for their groceries which have been delivered to their front door.

Mobile devices enable the use of numerous services, services that do not need card readers, personal computers, and modem combinations or a merchant?s wireline POS terminal. Nowadays, mobile devices have an embedded chip that can be used to store information and provide secure authorization and identification.

The Need for Interoperability

But to make these services available to the majority of mobile users, mobile payment service providers need to roll out services that offer interoperability. There have been numerous mobile payment pilots conducted that enable mobile devices to be used as a payment option, some of which have advanced into full mobile payment services (e.g. PayPal, PayBox, MovilPago). To date, we?ve discovered that the key to providing a successful mobile payment service has to do with the benefits it gives the end user and the end user’s customers: convenience, security, and freedom being a few key elements.

Though the industry has a long way to go before mobile devices will become a consumer?s payment instrument of choice, to ensure the stability of a viable mobile payments infrastructure, collaboration is the key.

Both mobile operators and financial institutions have tried, with little success, to implement their own individual pilot projects. Both parties have encountered numerous difficulties. Mobile operators, for example, because of their extensive existing customer base, technical know-how and billing comprehension, seemed the most likely candidates to provide mobile payment services. However, problems associated with risk management and the collaboration of numerous providers needed to accomplish interoperability have arisen. Financial insitutions on the other hand are confronted with a limited number of users and high infrastructure costs. To remedy these problems, mobile operators and financial institutions have begun collaborating to jointly offer mobile payment services to their customers. For instance, leading Dutch direct bank ING/Postbank Nederland, has partnered with the Netherlands number three mobile carrier Telfort, to offer users mobile access to the bank?s retail applications and link user bank accounts to Telfort?s prepaid service top-up capabilities for account recharging. In this case, the fact that these two entities are taking advantage of their natural symbiosis is a big step in the right direction.

Right now there are four entities needed to make a payment via credit card (acquirers, issuers, merchants and consumers) to make a payment via mobile device, there are five (mobile operators, acquires, issuer, merchant and consumers). As a result, the ideal business model includes the cooperation between mobile operators, financial institutions, technology suppliers and industry associations to create a certain amount of standardization which will ensure the successful implementation of a strong mobile payments infrastructure.

Still, numerous issues, including limited functionality available through the current generation of networks as well as a lack of standards to name a few, are still hampering the efforts being carried out by these industry players. In addition, questions regarding successful revenue generating business models also remain.

Conclusion

As mentioned earlier, cell phone and PDA penetration rates are higher then they’ve ever been, with forecasted growth rates showing exponential increases in consumer adoption. Accordingly, industry focus should be centered around the business side. Right now it is not feasible for a mobile operator or a financial institution to role out competing services on a proprietary model that does not include interoperability. Mobile operators and financial institutions must work together to implement mobile payment services that marry a consumer?s bank account with their mobile subscription. Offering payment services should not be seen as a competitive advantage, but rather as a necessity which will drive the success of the rollout of mobile commerce.

Today we see several initiatives taking place including the creation of various industry associations designed to address the different issues associated with the mobile industry. With these activities underway-mobile operators and financial institutions are beginning to work together to roll out new payment services. Pre-paid top up, for example, is the first real commercial mobile payment application that is being introduced into several markets. Financial institutions and mobile operators are collaborating to enabling mobile subscribers to electronically pay for their pre-paid wireless accounts using several banking channels such as telephone banking, Internet banking, and ATM and mobile banking, completely automating the ?top-up? experience using SMS (Short Message Service).

Currently, payment instruments are stored in virtual wallets residing either on the mobile device or centralized on the open network service platform. Consumers register for the service through their financial institution, mobile operator or service provider, depending on how the service is setup. The registration is necessary to link the consumer?s subscription data with their financial information and provision the mobile device for the service. Future methods may see users using their mobile device as a way to simply access their bank accounts, whereby the mobile operator?s function will be simply to transport the data. In addition, smart cards issued by financial institutions may begin to become more prevalent.

As mobile services and infrastructures evolve we will begin to see the true notion of mobile payment instruments living up to the hype of ?anytime, anywhere payments.? Soon, mobile payments will become an integral part of consumer lifestyles, replacing the payment instruments we have hidden in our wallets today. It is clear, that the co-operation between mobile operators and financial institutions is needed to build a viable mobile payments offering. It is also clear that the next logical payments industry step is to provide consumers with the ability to make payments for goods and services on their mobile devices. The only true concept of ?anytime anywhere payments? is conceivable through access via a mobile device. ‘Where there’s a wireless, there’s a way’ and the key to the success of the industry is as simple as giving consumers what they want.

Are you looking for a phone that is in the top lead around the world? Well if you did not already have one then you should know that the Samsung Company is the leading mobile phones around the world. The Samsung Company has been advertising for their phones for many years now and has some of the eye catching designs people are looking for in a phone today. If you are looking for a new phone from Samsung then we suggest the Samsung M8800 Pixon. When you get this new Samsung camera phone you will be happy to see the phones specifications and abilities the phone has.

The Samsung Pixon has a unique look, which brings the phone to being one of the top sellers of the Samsung Company. The phone is 3G enabled and ready to rock your world. This high specification camera phone is built with a touch screen that allows you to surf the web easy and text faster than before. The phone allows you to play some of the most graphic games that are out there today for a mobile phone. The Samsung M8800 Pixon also allows you to watch the downloaded videos you are wanting. The memory on the Samsung M8800 Pixon has 200mb of internal memory. You can also buy upgraded external memory that you can save your pictures on like a memory card. The micro SD external memory card can be up to 8 GB and can be found in any retail store.

If you are looking for a phone that has a built in digital camera then you should get the Samsung M8800. The Pixon phones digital camera provides you with an 8 megapixel camera that allows you to take a picture with high quality. The Pixon by Samsung offers a built in digital camera that brings you some of the most wanted updated technology such as the auto focus, shake reduction and blink detection.

The built in camera is perfect for someone that is looking for a camera and phone. The pictures can be viewed in a high revolution screen on your phone. The Pixon phone has USB ports v2.0 that is compatible to hook to your computer. The Bluetooth is also added to the Samsung M8800 Pixon, which means you can listen to your music you want on the phone. The internet can also be used the M8800 Pixon, which provides some of the fastest internet that is out there today on a phone.

The Pixon brings you some of the updated technology that cell phone can have. Surfing the web has gotten to be easy using your mobile phone and your touch screen allows you to send email. The Samsung Pixon is not too expensive if you are looking for one for yourself or family with no contract. When you purchase the phone you should also look into the other phones that the Samsung Company has to bring. The new Pixon phone from Samsung is the phone that pay as you go and don’t need a company contract. This brings new options of paying as you go.

The full QWERTY form factor, be they sliders or Blackberry type candybars, seems to be the de facto standard for serious smartphones pitched to businessmen and executives,.

It’s interesting to note that Sony Ericsson smartphones have shied away from such phones with only the Xperia X2 running on Windows as its first ever QWERTY slider. That is about to change this year.

At the recently concluded Mobile World Congress in Barcelona, the Japanese phone maverick unveiled a couple more - the Xperia X10 Mini Pro in tandem with a touchscreen X10 Mini and the Sony Ericsson Vivaz Pro to team up with the Vivaz touchscreen unveiled last January. It also looks like Sony is starting a tradition to affix “pro” on similar handsets that it modifies with a sliding QWERTY keyboard half shell

The Vivaz Pro is everything the Vivaz is with the disappointing exception of the imaging function that got watered-down from a gorgeous 8 megapixel resolution in the Vivaz to just 5megapxiels in the Pro. But apart from that, and a slightly wider, heftier and thicker body due to the QWERTY body half, the Vivaz brings the same high end Symbian S60 5th edition smartphone to a market that Sony Ericsson thinks would have looked elsewhere for a tactile side-sliding QWERTY smartphone.

Outstanding Hardware Features

Both Vivaz and its Pro variant use the PowerVR Series 5 SGX graphics engine that the earlier Satio used but clocked at 720 MHz instead of 600 MHz. This allows both to process high definition 720p video recording with video light and continuous autofocus. HD video playback is a bit compromised though with the absence of DivX and Xvid video file codec support, but there’s nothing that a downloaded 3rd party app can’t solve.

As indicated above, imaging in the Pro is more modest 5 megapixel resolution but you still get the same autofocus and touchfocus camera with LED Flash, face and smile detection and geo-tagging. Your gorgeous images and videos captured on the Vivaz Pro gets displayed on a brilliant 3.2-inch Wide-VGA resistive touchscreen with 16 million colors that gets protected by a scratch-resistant surface. There’s the usual gravity accelerometer but a proximity sensor meant to disable touchscreen sensitivity in a call is missing.

Elsewhere on the hardware front, the new Vivaz Pro is your basic 3G smartphone on the dual band UMTS with the HSDPA at 10.2 Mbps and HSUPA at 2 Mbps. It’s also your quad band GSM with GPRS/EDGE on 2/2.5G data connectivity. It comes with WiFi 802.11b/g with DLNA, Bluetooth 2.1 and microUSB 2.0 for wireless and wired data synching, respectively.

You get a built-in A-GPS and stereo FM receivers, Bluetooth A2DP, 3.5mm headphone jack and TV-out (VGA resolution) ports. The phone memory is 75 MB expandable to 16 GB from its microSD slot and you get a 9 GB microSD card free with the retail kit. Talk time is a remarkable 12.5 hours and standby is 18 days from the same 1200 mAh Lithium-polymer battery powering the earlier Vivaz touchscreen.

Matching Software Features

The Sony Ericsson Vivaz Pro comes bundled with Google Map 3.0 for its A-GPS receiver and Wisepilot turn-by-turn navigation apps. It comes with the SNS apps fro Facebook, Twitter as well as YouTube for online video sharing. There’s the usual PDF and Quick Office document viewer, WebKit HTML web browser with Java and Flash video support and the messaging apps like your typical email client and IM support. PlayNow online access to apps, music and games is also supported.

Nokia N95 8GB mobile phone is the latest Realplayer. It comes with plethora of astonishing and sophisticated features. It can play streamed media files. It has enormous 8GB of internal memory and you can store a lot of important data, music and work files. The N95 8GB mobile phone is coming with several cheap and attractive mobile phone deals offered by the Three network provider. It is offering pay as you go deal, contract deal, pay monthly deal and many more, You can buy the N95 8GB handset with Three network provider.

The Nokia N95 8GB 3G Smartphone comes with a two way slider opening mechanism. The handset from Nokia comes with a screen of 2.6 Inches in size that is capable of providing a 240 x 320 pixel screen resolution on a 16 million colour TFT display. The Nokia N95 8GB mobile handset weighing only 120 gram measures 99 x 53 x 21 mm making it really a comfortable and light weighted handset that is comfortable to hold in hand and to slip into the pocket.

Nokia N95 comes with lots of advanced features like camera, navigation system, music player, internet browser and more. It also has 3G technology that allows users to watch the person while talking. Nokia N95 is a quad band mobile phone with GSM network, which provides you seamless global communication. It comes with a 5 megapixel camera including Carl Zeiss optics, autofocus and flash. It also offers another camera to make video calls. The camera is quite wonderful in usage and gives you a higher experience of taking pictures, as well as recording videos.

Basically, Nokia N95 8GB Three is a multimedia gadget. It comes with MP3 player and FM Radio. You can listen to the music throughout the day. The handset has lots of music options like MP3/ AAC/ AAC+/eAAC and WMA player. It also has java MIDP and a 3.5 audio output jack. The Nokia N95 comes with attractive features including 8GB memory that is the most amazing feature of the handset. It is offered by the Three network provider with all lucrative deals.

If seeking a 40 inch widescreen LCD TV of superior quality one would be hard-pressed to find a better LCD TV than the Samsung LN40A500. The LN40A500 has a super sleek cabinetry made of a rich black finish further enhanced by Samsung’s original Touch Of Color(TM) technology. Within the housing of the LN40A500, the consumer will find the most advanced technologies incorporated and integrated into the device’s construction. An amazing piece of advanced technology, the LN40A500 is ideal for anyone’s entertainment center and can serve as a heart of one’s entertainment needs.

What It Offers :

o Several Components

o 20,000 To 1 Contrast

o Enhancing Digital Processors

o PC/RF Inputs

o P-i-P Functions

o Wheel Key Remote

o 10 Watt Speakers/ Surround Sound

o ATSC/NTSC/QAM Tuners

o HDMI: 2

o Swiveling Base

o 1920×1820p Resolution

o Progressive Scanning Function

o 178×178 Angles for Viewing

o Touch of Color Exterior Enhancements(TM)

The LN40A500 has been fitted with several different tuners so that the device is fully capable of translating and interpreting a range of analog and digital signals with ease. These images are translated and then presented on the LN40A500’s 40 inch widescreen with outstanding clarity and superior precision. While the native resolution of the LN40A500 is 1080 pixels, this device also has an image scaler which is capable of interpreting a series of different incoming pixel signals and presenting them with flawless exactitude. All images are further enhanced and augmented by the exceptional contrast ratio and digital enhancers embedded within the cabinetry of the Samsung LN40A500.

The word customizable and the name Samsung go hand-in-hand; the LN40A500 gives the viewer a chance to alter the color and qualities to his or her preference with an easy setup menu, and the user also has a choice of image sizes for viewing. This model offered by Samsung allows the user to define whether or not they want to zoom in on certain images and make them larger or if they want the images to span the entire widescreen. The fine options and stupendous features of this device are rounded off by the supreme quality of the surround sound technologies also incorporated in the sleek black housing of the Samsung LN40A500. Small, unobtrusive in speakers are fixed within the cabinet of the ultra-slim, wall mountable LCD TV deliver downward firing sound in such a way that it produces a 3-D wall of audible splendor.