The iPhone is manufactured by Apple. It was released in 2007. The device revolutionized the smartphone industry and took the world by storm. There have been four models of the iPhone. A seventh* generation model is set to be released in 2013. The iPhone is best known in the smartphone industry for its ease of use and clean user interface.
-iPhone 1G – The first generation iPhone was released with official carrier support for AT&T in the US and O2 in the UK. The older iPhone models had EDGE (2G) Data capabilities.
-iPhone 2G – The second generation iPhone was released. This model had an upgraded processor and more RAM. In some cases this model was still considered a first generation due to its lack of major changes. The iPhone 2G was the first iPhone to be released in China. The Chinese iPhone does not feature Wi-Fi support.
-iPhone 3G – The third generation iPhone was released in 2008. It was the first iPhone model to have 3G Support. iPhone 3G shipped with iOS version 3
–iPhone 3GS – The second edition of the third generation of iPhone model. This model added support for native video capture as well as upgraded system specs.
-iPhone 4 – The fourth generation iPhone was introduced with a major design overhaul giving it a more flat, square form factor. This model adds a 1GHz A4 processor, HD Retina Display, and front-facing camera for video chat. The iPhone 4 also includes all the features included in iOS 4.
–iPhone 4S – The second edition of the fourth generation iPhone introduces Siri, voice typing, and some minor hardware improvements including HSPA+ GSM 4G data support, an improved camera and the A5 chipset also introduces iOS 5. This is the first model to be introduced on Sprint.
–iPhone 5 – The sixth generation iPhone has a larger screen size of 4 inches, increasing the display by half an inch. All North American iPhone 5 models have LTE data supported. The iPhone 5 is powered by an A6 chipset.