T-Mobile US CEO John Legere is bringing his cost-cutting ways to the newly combined No. 4 U.S. carrier, a skill that put him in good stead with T-Mobile USA's German parent Deutsche Telekom, which is said to be itching to turn its focus away from the U.S. market. "I have the philosophy that it should not only be cheap, but it should look cheap," he said in an interview.

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