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A customer holds up an Apple iPhone 4 from AT&T at a Best Buy store in Mountain View, Calif., Tuesday, Jan. 11, 2011. Verizon Wireless made the long-awaited announcement Tuesday that it will start selling a version of the iPhone 4 on Feb. 10, giving U.S. iPhone buyers a choice of carriers for the first time. Since its 2007 debut, Apple Inc.'s phone has been sold exclusively for AT&T's network in the U.S. (AP Photo/Paul Sakuma)