by Hard Reset
Motorola EX122 hard reset
In the unlikely event that your phone stops responding to taps and key presses, try a quick reset. Remove the back cover and battery, then replace and turn on your phone as usual.
Reset default factory settings on your phone.
Caution: This option erases all information you have entered (including contacts and calendar entries) and content you have downloaded (including pictures, videos and music files) stored in your phone's memory. After you erase the information, you cannot recover it. This option does not delete SIM card or memory card information.
Find it: MENU > Settings > Restore factory settings, then enter “1234”.
Before you buy a new cell phone or new tablet, please try the following procedure to repair your device. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.!