from the phone's internal memory, including contacts, messages, and photos. Ensure you have backed up any critical information. The default security/lock code for this device is Method 1: Using the Dialer Code (Fastest)
The phone will reboot and return to its original "out-of-the-box" state. You can find a full list of relevant Nokia 6111 Codes for further troubleshooting. Method 2: The Physical Button Combo How to Hard Reset NOKIA 6111
Once the phone reboots, it should be wiped clean, returned to its original state, and any software glitches should be resolved. from the phone's internal memory
(Note: 7370 spells "RESET" on a telephone keypad) it should be wiped clean