Tmobile was so gracious to send me my sim unlock code for the sgs4g but it keeps saying unlock unsuccessful..i called them back and they verified the imei was correct an all..i called samsung galaxy tech support and they also comfirmed it was correct and i keep getting the same results..can anyone help me out? I dont have access to a computer to do it through the hex key an all.. am i missing some steps or something? I have a none tmobile sim in the phone an all i do get the screen to enter the code...im frustrated at this point because seems as if the people who made the phone cant even help me!!