Does ATT allow you to bring your own phone over and all need to do is just sign a contract with them? I'm thisclose to leaving TMO with all problems I'm having with with their service. As much as I don't want to, I'm going to upgrade to the 5s and *hope* that my service improves with the newer phone. Hopefully with the newer phone, all these problems I'm currently having will be a thing of the past. But... but if there is no improvement and I leave, ATT will allow you bring your own phone and all you do is just sign a contract, right?