You can format your device by typing *#7370# in standby mode. Before the device is reset, you may need to provide the 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.
- If you have made a backup of the device data, the data can be restored from the backup after formatting but some add-on applications can have restrictions that they are not restored from the backup.
- If you use formatting to repair faulty behaviour of the device, restoring the backed-up data files may restore the unwanted behaviour as well. In that case, a partial restore may resolve the situation.
- The contents of the SIM card and memory card (MMC) are not erased during formatting. Note, however, that in some device models (e.g. Nokia N8-00, E7-00, E6-00, C7-00 and X7-00) the internal mass memory E: will be formatted in this situation. It is therefore important that you back up all your data from the E: mass memory before resetting the device. Use Nokia Suite to back up the contents to your PC.