How to do Hard Reset for LG Optimus L7 P700
1. As for our first step, please turn off your device.
2. Second thing we have to do press and hold the Volume down key + Power key with your hand.
3. Let go of these buttons only when phone will vibrate (If the LG logo is displayed on the screen, continue to hold the keys for around 2 seconds) then there should appear screen like this:
4. Navigate with Volume keys and to confirm your choice press power button, choose the wipe data/factory reset option.
5. The hard reset process is complete. Congratulations.