Day Two Of The Barcelona 2013 Mobile World Congress [Getty Images]

A visitor enters the Firefox pavilion at the Mobile World Congress in Barcelona, Spain, on Tuesday, Feb. 26, 2013. The Mobile World Congress, where 1,500 exhibitors converge to discuss the future of wireless communication, is a global showcase for the mobile technology industry and runs from Feb. 25 through Feb. 28. Photographer: Angel Navarrete/Bloomberg via Getty Images

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