Nokia 220 hard reset / Nokia 220 dual sim factory resetYou can format your Nokia 220 device using the Restore factory settings option in menu:
Press left soft key (LSK) to enter Menu. Navigate to gear icon, Settings > Restore factory set. > Press select middle enter button and Enter security code 12345.
Default Nokia 220 security code is 12345.
This operation takes only 1 minute. After factory reset set the language you prefer and you are done.
If it is not working try this code:
You can format your device by typing *#7370# in standby mode. Before the device is reset, you need to provide the security lock code. The default lock code is 12345.
Formatting the device will permanently erase all user data and settings as well as add-on applications and operator specific settings.