Ok, so I bought a motorola backflip for at&t, and I don't like it, I am an at&t customer, and now I want to unlock it so I can sell it for more on craigslist. So I want to buy the unlock code and I do know how to unlock it, but once I put my simcard in the phone, (I have the at&t sim card) its not going to ask me for the unlock code because I'm an at&t customer, so how can I enter the unlock code without entering a different company's sim card? Please answer! I need the help!!! Thanks!