Postpaid churn was 1.27 percent in the first quarter, which T-Mobile CEO John Legere said was "the best postpaid phone churn numbers in our history".
The nation's No. 3 wireless carrier said it added 1.9 million customers to its network during Q2, marking the 13th consecutive quarter it delivered more than one million net adds.
Breaking that number down, T-Mobile said it added 890,000 post-paid accounts, which are the most lucrative category of wireless subscribers. The carrier has said previously it expects branded postpaid customer growth to slow this year, and according to the numbers, that's what's happening. Last quarter, T-Mobile added just over one million postpaids.