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.
Hard reset LG Optimus Black P970 full reset
dial 3845#* 970#
WARNING: All of your data will be lost!
or USE LG mobile support tool > P970 Recovery mode
1. With the phone turned off, hold the Home and Volume Down button and keep pressing them, then 2. Press and hold the Power button too until the device turns on