AT&T now has one more reason to fear T-Mobile

BGR- T-Mobile has clearly been making AT&T nervous — witness the stunning preemptive strike that AT&T made late last week when it said that it would give up to $450 to T-Mobile subscribers who switched to its service. Now T-Mobile has started taking some aggressive steps to address the biggest weakness in its war against AT&T, Verizon and Sprint: Its wireless network quality.

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