The iPhone is a line of Internet- and multimedia-enabled smartphones designed and marketed by Apple Inc.
The iPhone functions as a camera phone (also including text messaging and visual voicemail), a portable media player (equivalent to a video iPod), and an Internet client (with e-mail, web browsing, and Wi-Fi connectivity)—using the phone's multi-touch screen to provide a virtual keyboard in lieu of a physical keyboard.
The first-generation phone was quad-band GSM with EDGE; the second generation phone added UMTS with 3.6 Mbps HSDPA; the third generation adds support for 7.2 Mbps HSDPA downloading but remains limited to 384 Kbps uploading as Apple has not implemented the HSPA protocol.
Apple announced the iPhone on January 9, 2007, after months of rumors and speculation. The (retroactively labelled) original iPhone was introduced in the United States on June 29, 2007 before being marketed in Europe. Time magazine named it the Invention of the Year in 2007. Released July 11, 2008, the iPhone 3G supports faster 3G data speeds and assisted GPS. Apple released version 3.0 of the iPhone OS for the iPhone (and iPod Touch) on June 17, 2009. The iPhone 3GS has improved performance, a camera with higher resolution and video capability, and voice control. It was released in the U.S., Canada and six European countries on June 19, 2009, in Australia and Japan on June 26, and saw international release in July and August 2009.Source : WikiPedia
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