As a matter of fact I have an auction for an Unlocked Sony Ericsson T616 (originally with ATT) and I have used it with many carriers and it works just fine. There are no repurcussions and this way you do not have to sign up for a new 2 year contract. E Bay is a great source for used and new GSM cell phones both locked and unlocked. My auction ends at around 6.40 PM EST, if you search I am sure you will see mine and many more similar ones.