Пригодится может кому
LG P500
1. Turn the power off. If the phone is frozen, pull the battery out and inplace it back again
2. Hold the Home and Volume Down button
3. Press and hold the Power button until the phone turns on
4. Follow the on-screen instructions to hard reset the phone handset
The LG Optimus One P500 will then reboot to its factory fresh default state settings.