DO NOT TRUST T-MOBILE, NEVER NEVER BELIEVE T-MOBILE REPS, THEY ARE ALL LIARS. I recently transferred from at&t, the customer service said i can use my old iphone but i need to LEASE a phone prior to unlocking my at&t phone. After my phone was unlocked i tried returning the LEASE phone and they told me it cannot be returned and i have to pay the total cost of the LEASE PHONE. They transferred me from one dept to another, around 3-4 diff depts, they are telling m different things. ALL OF THEM LIED they tell you they'll pay for your phone but without your consent they'll force the new phone on you with their addl charges.