If the screen is working, you can restore all settings to their original factory defaults through the system settings. : Open the Settings menu from the home screen.
If your device runs a newer version of Android, these codes may simply do nothing or show a "Connection problem or invalid MMI code" error. If this happens, revert to Method 1 . grundig gx3800 factory reset code better
However, simply typing "9999" won’t work. The timing is critical. This is where most guides fail. Doing it better requires the correct sequence. If the screen is working, you can restore
And you want to reset it. Why? Because it’s frozen on a station you hate. Because it won’t respond. Because the past is stuck in its circuits like a splinter. If this happens, revert to Method 1
You can reset your unit using either the software menu or a physical "hard" reset if the screen is unresponsive. Go to the Home Screen and tap on Settings . Navigate to System or About Device . Look for Factory Reset or Erase All Data . Enter one of the codes listed above if prompted.