**Please make sure:
– IMEI # is not stolen or barred/blacklisted. Only clean ESN phone is supported and Only GSM part is unlocked, not the CDMA part of the iPhone.
Insert non accepted SIM card (foreign SIM card) into iPhone and connect with iTunes. Take backup of your phone, do a clean re-store and activate it with iTunes. Now your iPhone will be permanently unlocked! You may now proceed to re-store from iTunes back-up to get all of your data back.