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BARCELONA, Spain--The Fira Europa, where Mobile World Congress is held, is immense. Take a walk though the halls for a look at some of the big company booths.
2 of 22 Sarah Tew / CBS Interactive
3 of 22 Sarah Tew / CBS Interactive
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7 of 22 Sarah Tew / CBS Interactive
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22 of 22 Sarah Tew / CBS Interactive