Day Two Of Mobile World Congress 2014 [Getty Images]

Fitbit Flex wearable electronic fitness devices sit on display at the Fitbit Inc. pavilion on day two of the Mobile World Congress in Barcelona, Spain, on Tuesday, Feb. 25, 2014. Top telecommunication managers will rub shoulders in Barcelona this week at the Mobile World Congress, Monday, Feb. 24 - 27, a traditional venue for showcasing the latest products for dealmaking. Photographer: Simon Dawson/Bloomberg via Getty Images

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