LG Quantum hard reset

1. Power off the phone. Remove and reinsert the battery.

2. Press and hold the both Volume UP and DOWN buttons and the Camera buttons together + press the Power button.

3. Wait until the screen shows "Cold Boot" then release the Power button only.

4. Keep holding the Volume buttons and Camera buttons pressed until the Welcome screen appears.

By performing "Factory Reset", all user data will be ERASED. You MUST backup PRIOR to running factory reset & Web update.

LG C900 hard reset

1. Factory Reset.
Go to tap Applications list > Settings > about > reset your phone.

LG Quantum hard reset via menu

  1. On the Start screen, tap LG Quantum hard reset.
  2. Tap Settings > about phone.
  3. Tap reset your phone, and then tap yes.

Resetting your phone will erase all your personal content, including applications that you purchased and downloaded, and wil restore the
factory settings.


2. Try to update latest SW version via Web.Your phone are alerted to Windows Phone Updates automatically by the Windows Phone Update
service, and the updates are installed on the phone by using the Zune software running on your personal computer, when you connect your
phone with it.


By performing "Factory Reset", all user data will be ERASED. You MUST backup PRIOR to running factory reset & Web update.

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.