> T-Mobile automatically locks an unlocked device when you insert an AT&T sim into it. Which is bizarre. T-Mobile doesn’t own the device. They don’t even have

> T-Mobile automatically locks an unlocked device when you insert an AT&T sim into it. Which is bizarre. T-Mobile doesn’t own the device. They don’t even have a SIM in it. This should read as “T-Mobile has entered into an agreement, which should be against public policy and illegal, such that the device vendor locks the device under certain circumstances.”