TMo customer service is pretty good with getting you an unlock code provided you meet the criteria - basically phone paid for and on-net for 40 days. You'll get an email in a couple of days with the unlock code. Note that you only get 3 tries to enter the unlock code into the handset and then it will brick I believe. Also, you need a "foreign" (non TMo) SIM in the handset when you power it up to get the phone to prompt for the unlock code. Good luck!