The iPhone is a line of SmartPhones designed and marketed by Apple Inc. The iPhone runs Apple's iOS mobile operating system, originally named iPhone OS. The first iPhone was released in 2007;the most recent iPhone, the 6th-generation iPhone 5, was announced on September 12, 2012.
An iPhone can function as a video camera (though video recording was not a standard feature until the iPhone 3GS was released), a camera phone, a portable media player, and an Internet client with email and web browsing capabilities, can send texts and receive visual voicemail, and has both Wi-Fi and cellular data (2G, 3G and 4G (iPhone 5 only)) connectivity. The user interface is built around the device's multi-touch screen, including avirtual keyboard rather than a physical one.
Third-party as well as Apple application software is available from the App Store, which launched in mid-2008, and as of 2012, has over 700,000 "apps" approved by Apple
The iPhone 3GS added a faster processor and a higher-resolution camera that could record video at 480p. The iPhone 4 featured a higher-resolution 960 × 640 "retina display", a higher-resolution rear-facing camera and a lower-resolution front-facing camera for video calling and other apps. The iPhone 4S added an 8-megapixel camera with 1080p video recording, a dual-core processor, and a natural language voice control system called Siri.
iPhone 5 features the new A6 processor, holds a 4-inch Retina display that is larger than its predecessor's 3.5-inch display, and replaces the 30-pin connector with an all-digital Lightning connector.
More: iPhone 5:Features and Specifications>>
More: iPhone 5:Features and Specifications>>
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