iphone

The iPhone ( /ˈaɪfoʊn/ EYE-fohn) 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 on June 29, 2007; the most recent iPhone, the 6th-generation iPhone 5, was released on September 21, 2012. The user interface is built around the device’s multi-touch screen, including a virtual keyboard rather than a physical one. The iPhone has Wi-Fi and cellular connectivity (2G, 3G and 4G (iPhone 5 only)).
An iPhone can shoot video (though this was not a standard feature until the iPhone 3GS), take photos, play music, send and receive email, browse the web, send texts, and receive visual voicemail. Other functions—games, reference, GPS navigation, social networking, etc.—can be enabled by downloading apps; as of 2012, the App Store offered more than 700,000 apps by Apple and third parties.
There are six generations of iPhone models, each accompanied by one of the six major…