The calculator works by using a specific algorithm (often for or DCT4 Nokia generations) to translate your phone's unique identification number—the IMEI—into a series of network unlock codes. When you enter these codes into your phone, it bypasses the "SIM Restriction" and allows the device to communicate with other carriers. Step-by-Step Guide to Unlocking Your Nokia Nokia Unlocking Guide & Calculator | PDF | Law - Scribd
Enter your IMEI and select your network. The calculator will generate a list of codes. It usually provides 7 different codes. nokia free unlock online calculator by imei