For postpaid users, T-Mobile says it allows unlocking of fully paid-off phones that have been active for at least 40 days. But given the 365-day lock on prepaid users, T-Mobile's overall policy is ...

AT&T is no stranger to pushing back at federal rules it doesn’t like. The telecommunications company continued that tradition by arguing against the 60-day unlocking rule the Federal ...

AT&T and T-Mobile argue unlocked phones are bad for their customers - here's why The FCC wants all phones to be unlocked after 60 days. Two major mobile carriers do not, but Verizon isn't one of them.