Hey lefty I just tried my Mom's ATT Sim in the phone and it not only worked it rebooted and installed ATT software and even got rid of Verizon boot image and changed it to ATt... its behaving like a factory unlocked phone have you had that happen in your experience using Verizon unlocked phones? It from best buy. I thinking that even though it Verizon it may be factory unlocked cause it is best buy version... thanks for any onsite you have