Hard Reset LG Optimus L7 II P710
- Make sure, that your phone is off.
- Then press and hold Volume Down and Power button around 10 seconds.
- Release them, when LG logo appears.
- Confirm whole process of Master reset by tapping Power button twice.
- Done, after restart you can work on device.
Help! This doesn't work
Hard Reset will erase all of your data
All described operations you are doing at your own risk.