SAN FRANCISCO (MarketWatch) -- Leap Wireless International Inc. shares climbed as much as 6%, to $6.12, in early trading Thursday after the company said its Cricket Wireless subsidiary would begin offering pre-paid plans for Apple Inc.'s iPhone. The move makes Cricket the first pre-paid mobile phone carrier in the U.S. to have the iPhone. Starting June 22, Cricket will offer the iPhone 4 and ...


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