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Mobile phones with 5G are displayed at the Mobile World Congress in Barcelona on February 22, 2016. The world's biggest mobile fair, is held from February 22 to February 25. / AFP / JOSEP LAGO (Photo credit should read JOSEP LAGO/AFP/Getty Images)

Mobile phones with 5G are displayed at the Mobile World Congress in Barcelona on February 22, 2016.

The world's biggest mobile fair, is held from February 22 to February 25. / AFP / JOSEP LAGO        (Photo credit should read JOSEP LAGO/AFP/Getty Images)