T-Mobile's initiatives to break wireless industry conventions seem to be working.
The No. 4 wireless company said Tuesday that it added 643,000 long-term, good-credit phone customers in the latest quarter. It's the second straight quarter of increase after years of losses.
The growth comes as T-Mobile introduced new pricing plans, the ability to upgrade phones more frequently and free data and texting services in more than 100 countries.
Shares of T-Mobile, which is under the control of Germany's Deutsche Telekom AG, rose 3 percent in morning trading.
T-Mobile is also boosting its subscriber growth prediction for the full year. T-Mobile says it now expects to add a net 1.6 million to 1.8 million of the good-credit customers this year, up from its previous prediction of 1 million to 1.2 million.
Explore further: T-Mobile gains key customers for first time in years