In this Jan. 15, 2008 file photo, MacWorld attendee Wil Gieseler talks on his Apple iPhone in front of a iPhone poster at the MacWorld Conference in San Francisco. Apple Inc. says its online stores in the U.S. and U.K. are sold out of the iPhone, a sign supplies are being winnowed ahead of the launch of the device's next generation that will feature faster Internet surfing speeds. (AP Photo/Paul Sakuma, file)

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