A visitor uses her mobile phone as she is seen next to a big banner anouncing new mobiles at the world's largest mobile phone trade show in Barcelona, Spain, Thursday March. 1, 2012. (AP Photo/Emilio Morenatti)

Associated Press
A visitor uses her mobile phone as she is seen next to a big banner anouncing new mobiles at the world's largest mobile phone trade show in Barcelona, Spain, Thursday March. 1, 2012. (AP Photo/Emilio Morenatti)
A visitor uses her mobile phone as she is seen next to a big banner anouncing new mobiles at the world's largest mobile phone trade show in Barcelona, Spain, Thursday March. 1, 2012. (AP Photo/Emilio Morenatti)
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