How to reset master code in Nokia
Code #pw+123456789012345+1# type in the following way:
1. Turn on the phone without sim card
2. Select character # on the keypad
3. Characters p, w, + get by choosing few times STAR *
4. Press # button to approve code
5. Message "SIM restriction OFF" appears, Your phone is now unlocked
WARNING!!!
You have only 3 attempts to enter the code. The last failed attempt will block the counter.