Because the merger between T-Mobile and Sprint has been , it wasn't exactly surprising to see the nation's third-largest wireless service provider starting the very day . 

Magenta then continued to rapidly and thus in many places while also expanding the "nationwide" . At the same time, select Sprint customers were granted as part of the first stage in a long-term migration process expected to ramp up soon.

We're talking really soon, mind you, at least according to an internal document addressed to "all dealers" . This pinpoints June 15 as the ...