Its bottom line is doing well, too. Its total revenues are up over 10 percent to $8.8 billion, and it made a tidy $479 million in profit. That's peanuts next to the profits of its biggest competition (Verizon took in $4.4 billion this quarter), but no mean feat for a carrier that still thrives on cost-conscious prepaid users.

And crucially, T-Mobile is predicting a rosy future. It's dramatically increasing its expected postpaid subscriber additions this year from a minimum of 2.4 million to at least 3.2 million, and now expects to rake in at least $9.7 billion in earnings for 2016 compared to its previous estimate of $9.1 billion. Whatever you think of T-Mobile, it's clear that the network doesn't expect anyone to slow it down for a long, long time.