You need to find the unlock key first, but don't try this if you don't have it, because it allows only 3 times. Proceed to the options menu and select SIM Card from the list. Type on the handhelds key pad MEPD and a list of extra functions will appear. Next type on the hadhelds keypad MEP then press and hold the ALT key and press 2 key and the MEP key entry window will appear. enter the code will holding the ALT key to type in all number because it is a 16 digit NUMBER Sequence it is looking for and then press the enter key. If your phone has an IT Policy it may not give you a responce saying that the code was accpeted. The phone will restart itself and you will be in business..