While holding these, press the until the phone vibrates or the Nokia logo appears.
If prompted for a security code to confirm, and does not work, you must use the hardware key method below. 3. Hardware Key Reset (Power-Off Method) Nokia C3-00 Security Code Not Working
If standard resets fail, the phone's firmware may need to be "flashed" or reinstalled. While holding these, press the until the phone
A PC, a compatible USB cable, and software like Nokia Care Suite or the Nokia BEST (BB5 Easy Service Tool) . While holding these
If the phone is still accessible but won't accept the code for specific settings, you can try a dialer-based reset. Note that this typically . Open the phone's dialer. Type the code: *#7370# .