Remote unlocking by codes removes the SIM lock or Network lock placed by your wireless carrier. It allows you to use your phone on any GSM wireless network anywhere in the world. You will not have to mail in your phone. No Cable or Software required. No technical knowledge required at all. Simply provide us your phone's IMEI and current service provider. The unlock code together with FREE instructions will be sent to your email within the time frame. Simple codes to be entered via phones keypad and you are done. It's 100% SAFE and GUARANTEED.