On Friday AT&T began offering a new deal to win customers from T-Mobile: up to $450 if they switch carriers and trade in their handset. This evening in a statement T-Mobile CEO John Legere called the new AT&T plan "a desperate move" and even taunted the company, explaining how T-Mobile spent AT&T's cash that AT&T ultimately had for forfeit after the federal government stopped a merger between the two companies in 2011.
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