To say T-Mobile has had an impact on the American wireless industry would be an understatement. The “Un-carrier” has introduced a broad series of initiatives that rivals have scrambled to emulate, from early upgrade smartphone plans to rollover data to programs that pay off new customers’ early termination fees when they switch from other carriers. Couple these initiatives with a very smart marketing push and you get a mobile carrier that’s punching way above its weight in a wireless market that Verizon and AT&T have traditionally dominated.
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