Nokia 5800 hard resetRestore the original factory settings
Restore original settings
Select Menu > Settings and Phone > Phone mgmt. > Factory settings.
You can reset some of the settings to their original values. To do this, you need the lock code.
After resetting, the device may take a longer time to power on. Documents and files are unaffected.
Nokia 5800 hard reset with buttons / keys
Press and hold GREEN + RED + CAMERA when powering up, then input default 12345 security code.
Reset the Nokia 5800 XpressMusic device