When T-Mobile started this whole Uncarrier thing, it began with the introduction of a Simple Choice phone plan, meaning free international data and texting when you signed. Almost two years later, T-Mobile is upgrading that original phone plan by expanding coverage to Mexico and Canada.
If you use a non-T-Mobile network to connect your T-Mobile device to the Internet, you'll want to start looking into alternatives—like now. Documents leaked to TmoNews show the carrier will cap off-network connections after as little as 50MB of data come April.
Earlier this month a tipster claimed that he received a huge roaming bill from T-Mobile despite taking precautions. Now, T-Mobile has offered an official response—some of the apps can turn on data roaming by themselves.