Reset Unlock LG K51S – Forgot Password or Pattern Lock

You’ll find many reasons to experience issues with LG K51S. But before doing something to solve what is wrong, you should identify first what caused the problems. Troubleshooting your LG K51S model by LG isn’t as difficult as you would think. In truth, though you aren’t a tech specialist, you can solve the problems by yourself.

So what’s the most common issue you may experience in your LG K51S model? Perhaps, forgetting a password/pin or pattern lock could be one of the most significant problems with your LG K51S handset by LG that can be happened.

Here are some tips and tricks on how you can reset/unlock/hard reset your LG K51S when you forgot pattern lock or forgot password or PIN or Face Unlock.

Why Reset or Unlock LG K51S ?

The thing is, people often make mistakes and get locked out of their phones. Trust me, it’s an honest mistake, and you’re not the only one facing this. Every day, lots of people may make the same mistake and come here to look for solutions.

Every mistake that causes a phone to get locked is different. So, according to the type of locking, there’s a specific method that you can apply. Lets’ talk about various kinds of locking and several ways to get you out of that locked phase.

Things you will learn here with your LG K51S:

  • Factory reset
  • Hard Reset
  • Google security question
  • Google find my device
  • Flash the device using Android multi tool
  • Use any trustworthy unlock tool available online
  • Code reset
  • reset Forgot Password
  • Root and installing custom ROM
  • face unlock remove

So, these are the methods that you can apply to unlock your phone. Not all the option is applicable for similar type situations. Every way involves for a specific problem. So, read through the options to determine which one is your issue and apply accordingly.

Method 1

How to Unlock LG K51S by Hard Reset

Hard reset is usually meant for the times when you can’t access your phone at all. That means you have forgotten the lock screen pattern or password, or your fingerprint is not matching. So, for this reason, you have to attempt a hard reset.

But don’t worry, if you have your data transfer module selected remotely from “developer options”, you can transfer your data to your computer.

Google account keeps backup of everything nowadays. So, you might not lose any data at all if you have all the backups turned on. Follow the steps below to perform a hard reset.

    • Make sure the battery of LG K51S already full or more than 50%
    • When phone in lock mode
    • Press and hold the “power button” and the “volume down” together for a few seconds until the phone screen is lit
    • if something it does not work try with the “Volume down button” or 3 buttons combined
    • Phone will show the below screen

LG Factory Reset 1

      • The LG K51S will restart and keep continue pressing the power and vol down key

    LG Factory Reset 2

    • Now using vol up/vol down select Yes

Asus Factory Reset 3

Asus Factory Reset 4

  • On this screen, when yes is selected, press the power button to select.

Asus Factory Reset 5


  • After successfully LG K51S will restart.


After the phone turned on, Your device will be like, taken out of the factory.


Alternate method 1 of Unlock LG K51S by Hard Reset / Recovery Mode

    • Make sure the battery of LG K51S already full or more than 50%
    • Turn off your phone.
    • Press and hold the “power button” and the “volume up button” together for a few seconds until the phone screen is lit
    • if something it does not work try with the “Volume down button” or 3 buttons combined
    • The phone will vibrate and the screen logo will show, release all keys
    • No command will show, release and press the power button and vol up/down button again

LG Factory Reset 1

    • Now you will see the recovery mode window

LG Factory Reset 2

    •  On this screen, you can only use your volume buttons to toggle through the options and the power button to select.
    • Toggle using the volume buttons and select Wipe Data/Factory Reset

LG Factory Reset 3

    • User power button to select it.
  • You will see the confirmation screen. Toggle and select “Factory Data Reset” 

LG Factory Reset 4

LG Factory Reset 5

    • After successfully reset the phone, select “Reboot system now” to reboot the phone.

LG Factory Reset 6

After the phone turned on, Your device will be like, taken out of the factory.


Method 2

How to Unlock LG K51S by Factory Reset

The factory reset is a straightforward process. It can be done while you’re on your phone. Usually, the locking condition, in this case, is app lock. Sometimes to add an extra bit of protection, we lock specific applications. For example, if you don’t want anyone to see your pictures, you add app lock to your gallery.

But if you forget that pattern or code, you won’t be able to access the gallery to view your pictures. To change that pattern or regulation, you have to know the exact one you used to lock your gallery.

To get out of this mess, you need to factory reset your device. Factory reset refers to removing all the information, apps, settings, and files that your phone currently has and turning it into the way precisely it was when you bought it the first time apart from firmware updates.

You will lose all your data, all your photos, documents, and essential files after a factory reset. So, it’s evident that you back up each and everything on the cloud or your computer using a USB. After that, you’re good to go.

Follow the steps below to factory reset your LG K51S.

  • Open “Settings” on your phone
  • Find and Open “General Management”
  • Select “Backup & Reset”
  • Find “Factory Data reset” and open it
  • Select “Reset”
  • Then Last you will see and tap “Delete All”
  • Then, your device will reboot, and it’ll take a few minutes for your phone to restart, it’s completely normal if it takes time
  • Do not try to force shutdown using the power button

Now, the phone will turn on, and you will see that all your locks, settings, accounts, apps, etc., are gone. You will have to set all the applications as you got a new phone.

Note: Best way to go to setting of Reset, Search your phone using the term Reset

Method 3

How to Unlock LG K51S with Google Security Questions

When you’re backing up your passwords and settings using Google, you get to select a security question in case you forget them. So, Google Security questions in a method with which you can unlock your LG K51S phone.

When you’re at your locked screen, and you have attempted with a wrong pattern several times –

  • It will show a forget pattern option
  • After you tap that, your phone will ask you the Google security question that you have set earlier
  • Answer that correctly
  • Settings will tell you to select a new pattern
  • Confirm the new pattern
  • Finally, you’re done. Now, lock the screen and use the new pattern to unlock your LG K51S

This applies only if you have your Google security questions memorized. Otherwise, you won’t be able to use this method.

Method 4

How to Unlock LG K51S with Google Find My Device

Find my device is an option with which you can locate your device and remote access from a computer to erase everything on your device for security reasons.

This method usually opts when you lose your device, or it gets stolen. When your device is stolen, your data becomes very vulnerable, and the thief may attempt to use your data against you. That’s why google has this option with which you can erase all the data of your LG K51S remotely.

There are some perquisites though-

  • Your LG K51S must be synchronized with google find my device
  • Your LG K51S has to be connected to the internet.

In most cases, you can use the hard reset option to unlock your device when you get locked out of it and forget your password. But for some reason, due it any software issues or bugs, you may not be able to access the fast boot or recovery mode.

Then is when you should apply this method. First-

  • Go to the official google find my device website ( and login to your google account
  • If you have your device linked with “Find my device”, you’ll find it in the available devices section.
  • Google-Find-My-Device
  • Select your device, and there will be such options as Secure device, Play sound, Erase device etc.
  • Select the erase device option, and it will wipe out all the data from your phone
  • Google-Find-My-Device-Erase-Device

When the data is wiped out, you will see that the device is no longer locked and the interface has become factory fresh.

Method 5

How to Unlock LG K51S Using Android Multi-Tool

There’s an option with which you can wipe all the data of your device using your computer. All you need is a USB cable to connect your phone with the PC/laptop and Software called Android Multi-Tool.

First, you have to-

  • Download android multi Tool
  • Connect yourLG K51S phone with the computer through a USB cable
  • Start the application
  • It would help if you had USB debugging activated on your device using Developer options through settings
  • Then power up your device pressing the volume down and power button together
  • Then a dropdown option will appear on the Software on your computer when your smartphone enters recovery mode
  • Hit the number 5 option which wipes out all the data from your device
  • After the process is complete reboot your phone

You’ll see that any lock that your phone had is gone. It’s good as new, and you have to perform the set up of your phone as a new device.


Method 6 (For Advanced user)

Unlock/Reset LG K51S by Root and Installing Custom Rom/Fresh Rom

When there’s an issue with the Software, some options of your phone will supposedly fail due to bugs. In that case, what you can do is, root your LG K51S and install a Fresh Rom of LG K51S or a different software of any other phone on your device that is compatible with the specifications.

This is a method many people apply but has many downsides to it. You will lose the warranty of your device. But if you can select the correct ROM and firmware for your device, in most cases which is very easy to find, your device will work better than ever.

  • Unlock bootloader
  • Install TWRP
  • Download any custom ROM you want that supports LG K51S
  • Install the custom ROM using TWRP bootloader

There are many different methods of how you can do this. Using TWRP is the most convenient method for everyone.

About LG K51S Phone:

LG K51S is a great phone by LG. It comes with Android 9.0.  It has storage of 64GB storage, microSDXC. The screen size is 6.55″, and the highest display resolution is 720×1600 pixels. Powered by  32MP camera and it has variant of 3 GB RAM with Helio P35. And yes its battery is Li-Po with 4000mah, which is enough for this phone more than 1 day+ of uses.


Final Words

These are the ways you can unlock your LG K51S  if you get locked out of your device. Remember, a smartphone is a very complicated device. If you do not follow the steps, we have talked about in the order we have set them, you might end up causing damage and bricking your phone mostly if you try the ROM implementation method. Your device may not start again. So, follow the steps mentioned earlier accordingly. You will be able to unlock your LG K51S  without breaking a sweat.