It won’t be long before T-Mobile overtakes Sprint as America’s **. 3 wireless carrier While Verizon and AT&T have traditionally*been the two biggest players in the U.S., Sprint and T-Mobile have almost always been stuck behind in third and fourth place, respectively. However, T-Mobile's big "Uncarrier" surge over the last year is threatening to shake up the traditional order and make it, **t Sprint, America's **. 3 wireless carrier.