While holding these, press the until the phone vibrates or the Nokia logo appears.

A PC, a compatible USB cable, and software like Nokia Care Suite or the Nokia BEST (BB5 Easy Service Tool) .

When the security code for a Nokia C3-00 is not working, it is usually because the default code has been changed and forgotten, or the phone has entered a temporary lockout state after too many incorrect attempts .

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# .

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 Apr 2026

While holding these, press the until the phone vibrates or the Nokia logo appears.

A PC, a compatible USB cable, and software like Nokia Care Suite or the Nokia BEST (BB5 Easy Service Tool) . Nokia C3-00 Security Code Not Working

When the security code for a Nokia C3-00 is not working, it is usually because the default code has been changed and forgotten, or the phone has entered a temporary lockout state after too many incorrect attempts . While holding these, press the until the phone

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# . If the phone is still accessible but won't

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)