LG Optimus L4 II E440 hard reset using buttons

LG L4 II Hard Reset LG E440 Factory Reset  Dual SIM Andorid phone
Unlock forgotten password on your LG L4 II E440 phone

Using the Hard Reset
(Factory reset) If your phone does not restore to its original condition, use a Hard Reset (Factory Reset) to initialize it.
1. Turn the power off.
2. Press and hold the Power/Lock key + Volume Down key + Home Key.
3. When the LG Logo appears on the screen, release all keys.
lg e440 l4 ii hard reset
WARNING
If you perform a Hard Reset, all user applications, user data and DRM licenses will be deleted. Please remember to backup any important data before performing a Hard Reset.

or LG L4 II Android factory reset from menu

To reset your LG Optimus L4 II E440 Android phone to factory settings and erase all the data on your phone, touch Menu > Settings> Backup & Reset > Factory data reset > Reset phone.

OR
Secure booting Error!
Cause: Boot certification verify issue
Try to connect your phone via USB cable in Emergency mode - Follow instructions below on how to connect in emergency mode

You can use LG Mobile Support tool to repair your LG cell phone, after download select menu Customer Support > Recovery Phone (E440)
Connect your phone to the USB cable by pressing the Volume DOWN key and while you holding down the Vol- key connect the cable to the phone.
(The USB cable already connected to the PC) You are in Download mode or software upgrade mode.
Select Options / Upgrade recovery / Emergency upgrade and hopefully it will download the firmware and it will re-flash it. It can take up to several hours! be patient. Normally only minutes.
lg e440 upgrade recovery

You may see this error
Upgrade stopped due to an error.
To try upgrade again, follow the steps below.
1. Disconnect the phone from PC and remove the battery from the phone.
2. Insert the battery back and reconnect the phone to PC.
3. Turn on the phone.
4. Press the Retry button below to start the upgrade.
lg e440 security error

LG L4 II soft reset

When the LG L4 II phone's screen freezes

When the screen freezes
If the screen freezes or the phone does not respond when you try to operate it:
Press and hold the Power/Lock key for 10 seconds to turn your phone off.
If it still does not work, please contact the service center.

Reset LG E440, reset LG L4 II,  unlock LG L4 II forgotten password or gesture lock

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.