Google Android Documentation

Mobile phones operate on the same principles of radio transmission. They use radio waves to transmit conversations. These radio waves can be done at different frequencies, just the same way as regular radio stations on different frequencies. Wireless phones that are in accordance with the most popular standard for mobile phones, Global System for Mobile (GSM) communication, use of frequencies within 5 different bands of frequency measured in megahertz: 850, 900, 1800, 1900 and 2100 MHz A phone that works in one frequency band unfortunately can not work in another frequency band next to it not to be added as a specific frequency band extra. To overcome this problem Dual, Tri and Quad have GSM Phones been developed that use two, three or four frequencies, respectively. Quad-band phones work as widely as possible, in over 200 countries worldwide.

Cell phones have come a long way both in design and function since they were first introduced in 1983. Since that time, literally thousands of models of mobile phones hit the streets. Some devices have become highly sophisticated by virtue of acquisition of more complex features. The most sought after iPhone 3G, which can take a picture, play a video or run one of the 35,000 applications available on Apple Store is drastically different from the analog phone prototype Motorola DynaTAC, designed exclusively for voice. These advances in cell phone begging the question "What is a smart phone?"

Even experts disagree on the phone must be labeled "smart" phone. Although there is general consensus on the issue, we know that Smart phones differ from ordinary mobile phones in two basic ways: how they are built and what they can do. Other definitions put stresses different on these two factors. Some experts say that a smart phone is a phone that offers advanced features, often with PC-like functionality of the computer. Technicians argue that a smart phone software to run complete operating system that provides a standardized interface and platform for application developers. However, for others, a smartphone is simply a phone with advanced features like e-mail, internet and e-book reader, and / or a total built-in keyboard or external keyboard USB and VGA display screen. Put simply, the mobile "smart are computers that you speak.

There is a growing worldwide demand for phones intelligent or "advanced mobile devices." The market for smart phones is bourgeoning because this digital age, there is a belief that the information should follow him wherever he goes. This information can live on the phone (much better because it is easily accessible), in your office or home computer or even Internet. As such, a smart phone is essentially a miniature computer that can function as a phone supporting a previous forecast, "The phone will your PC. "In the future, the demand for smart phones that can boast of powerful processors, abundant memory, large screens and open operating systems exceed the rest of the mobile phone market for years.

Smart phones today use an identifiable operating system (OS), often with the possibility of add applications (eg for enhanced data processing, connectivity and entertainment). This is in contrast to regular phones. Applications smart phone that can be developed by the manufacturer of the mobile device, the network operator or any third-party software developer since the operating system is open to the so-called "third-party applications." Although the Symbian operating system is a leader in smart mobile device "market other competitors such as Apple's iPhone, Windows Mobile, Microsoft Mobile and Google Android are fast roads in the market.

As expected, the smart phone features vary from phone to phone. But most smart phones support capabilities of e-mail with the functionality of a personal organizer. The Resources may also include a miniature keyboard, a touch screen, a camera, a GPS system embedded, and the ability to read business documents in a variety formats such as PDF and Microsoft Office. Some smart phones incorporating multimedia software to play music, view photos, and viewing video clips, Internet browsers, or even just secure access to company mail, such as those provided by the BlackBerry. A common feature of most smartphones is an Contacts list can store as many contacts as available memory permits, in contrast to regular phones which have a limit on the maximum number of contacts that can be stored.

Currently, the 1 billion phones camera shipped in 2008, smart phones make up the high-end market. This represents about 10% of the total market for cell phone or about 100 million units. Beyond the iPhone, smart phones include name brands such as RIM's BlackBerry Nokia N-series, and Pre Palm to name a few. It should be noted that regular cell phones are getting smarter, though, and is only a matter of time before all phones have some of the advanced levels of functionality associated with smart phones today.

About the Author:

Dr. Valerian Nakaar is an expert in science and technology who provides information to help you make better consumer choices. If you enjoyed reading this article, you may also find other related articles on my blog interesting. Want to learn more about smart phones and other cutting edge technologies? Go to: =>
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