LG Optimus 4X HD P880 hard reset: Press and hold the Power/Lock key + Volume Down key...

LG Optimus 3D Max P720 hard reset: From the Home screen, press the following factory reset code then....

LG Optimus 3D Cube SU870 hard reset: From the Home screen, press the following factory reset code then....

LG Optimus L7 P700 hard reset: When the phone is switched off, press and hold the Volume down key +...

LG Optimus L5 hard reset: When the phone is switched off, press and hold the Volume down key +...

LG Optimus Vu hard reset: From the Home screen, press the following factory reset code then....

LG Optimus LTE Tag hard reset: From the Home screen, press the following factory reset code then....

LG Optimus L3 E400 hard reset: When the phone is turned off, press and hold the Home key + Volume down key +....

LG Motion 4G MS770 hard reset: Press and hold Volume Down buttons until phone vibrates...

LG Optimus G E973 hard reset: Press and hold Volume Down Key +...

How to hard reset LG Nitro HD P930: Press and hold the following keys at the same time for 10 seconds: Power/Lock Key + ...

How to hard reset LG Optimus 4G LTE: Turn off the phone. Press and hold both Volume down + HOME...

How to hard reset LG Extravert: To reset your phone to factory settings and erase all the data on your phone, Touch ...

How to hard reset LG DoublePlay C729: Press and hold: Home Key + Power Key + ...

How to hard reset LG Enlighten VS700: Press and hold the following keys at the same time for less than 8 seconds: Power/Lock Key + the...

How to hard reset LG S367: To reset your phone to factory settings and erase all the data on your phone, Select...

General advice: Before you buy a new cell phone or new tablet, please try the following procedure to repair your device in a software way. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before doing factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.! Please also note, that a hard reset operation will not unlock your mobile phone's SIM lock or network lock, but it will remove the unlock pattern, remove the user password or PIN password (NOT the SIM card's 4 digit PIN code). Also note that the firmware version will not be affected in any way, it will not be downgraded, it will remain the same you are using and if you have rooted your device, root privileges remain also unaffected.