LG Optimus Black P970 hard reset1. Turn the phone off.
2. Press and hold Volume DOWN + G KEY (3D Motion Gesture key ) and TURN ON the LG Optimus BLACK Android phone.
3. When the phone turned on release only POWER key, but keep pressing the Volume DOWN + G key until the green Droid appears.
4. Release all keys.
5. Wait until phone reboots. It will take a few minutes, do not power off.
Hard reset LG Optimus Black P970 full reset
dial 3845#* 970#
WARNING: All of your data will be lost!
LG Optimus Black P970 reset using PC companion
or USE LG mobile support tool > P970 Recovery mode
1. With the phone turned off, hold the G key and Volume Down button and keep pressing them, then
2. Press and hold the Power button too until the device turns on
LG Optimus Black P970 soft resetIf the device has frozen
1. Take out battery.
2. Reinsert it.