Turn off the cel .. If your LG Optimus is frozen, remove the bateríay off
Hold down the house and also decrease the volume button
Press and hold the power key until the device is switched
Follow the onscreen instructions to restart the device
All data, including third-party applications are removed from the LG Optimus Once the cleaning is complete, restart the phone to its factory fresh.
I hope they serve for me it worked very well. greetings from puebla mexico.

Did you forget the pattern? The only way to get around this is to reset the phone to factory default. Here's how to do it:

Hold down volume up, home and search for 5 seconds while the phone is on. This will erase everything and set the phone back to factory default.

used many times the pattern and my cell lg bloquie optimus desbloquiarlo MetroPCS as I can??
somebody help me