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The iPhone is an Internet and multimedia enabled smartphone 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 email, web browsing, and Wi-Fi connectivity) ? using the phone's multi-touch screen to render a virtual keyboard in lieu of a physical keyboard.The first-generation phone hardware was quad-band GSM with EDGE; the second generation added UMTS with 3.6 Mbps HSDPA;[17] the third generation adds support for 7.2 Mbps HSDPA downloading but remains limited to 384 Kbps uploading as Apple had not implemented the HSPA protocol.Apple announced the iPhone on January 9, 2007,[19] after months of rumors and speculation.[20] The original iPhone was introduced in the United States on June 29, 2007 before being marketed worldwide. Time magazine named it the Invention of the Year in 2007.[21] Released July 11, 2008, the iPhone 3G supports faster 3G data speeds and assisted GPS.

Development of the iPhone began with Apple CEO Steve Jobs' direction that Apple engineers investigate touchscreens.Apple created the device during a secretive and unprecedented collaboration with AT&T Mobility?Cingular Wireless at the time?at an estimated development cost of US$150 million over thirty months. Apple rejected the "design by committee" approach that had yielded the Motorola ROKR E1, a largely unsuccessful collaboration with Motorola. Instead, Cingular gave Apple the liberty to develop the iPhone's hardware and software in-house.Jobs unveiled the iPhone to the public on January 9, 2007 in a keynote address. Apple was required to file for operating permits with the FCC, but since such filings are made available to the public, the announcement came months before the iPhone had received approval. The iPhone went on sale in the United States on June 29, 2007, at 6:00 pm local time, while hundreds of customers lined up outside the stores nationwide.[1][28] The original iPhone was made available in the UK, France, and Germany in November 2007, and Ireland and Austria in the spring of 2008.

出典:フリー百科事典『ウィキペディア(Wikipedia)』



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