Hey, i want to Master Reset: "Reset Device" my Sony Ericsson W580I but i want to know if there is anything bad that can happen like the company (AT&T) won't apply to the phone anymore or if it will mess up my entire phone? I already wrote down everything that i needed so i can put it back in the phone after the reset so the memory isn't a problem. If i shouldn't do this please tell. Or if someone has already reset their w580i tell me what happened? Thanks 