Visitors attend the Mobile World Congress, the world's largest mobile phone trade show in Barcelona, Spain, Tuesday, Feb. 25, 2014. Expected highlights include major product launches from Samsung and ... more 
Visitors attend the Mobile World Congress, the world's largest mobile phone trade show in Barcelona, Spain, Tuesday, Feb. 25, 2014. Expected highlights include major product launches from Samsung and other phone makers, along with a keynote address by Facebook founder and chief executive Mark Zuckerberg. (AP Photo/Manu Fernandez) less 
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Associated Press | Photo By Manu Fernandez
Tue, Feb 25, 2014 12:15 PM EST