I am getting a great deal on BAD ESN Verizon iPhone 5 (MD665LL/A) from a local pawn sim. I am planning to use it abroad for GSM Use. I have few queries 1. Do I need a verizon sim to activate the iPhone after iOS7 or future iOS updates? Right now it runs iOS 6.1.4 2. Do all the Verizon iPhone 5 are GSM unlocked??? 3. Any know issues due to BAD ESN in future use with GSM Carriers abroad? Simply I can't resist the deal. Thank you very much for your help!