How to Fix Fingerprint Not Working on Android Phone

Last Updated: October 20th, 2023By Categories: Android Unlock

Aside from a password, PIN, or pattern, one of the best ways to secure your Android phone is through a fingerprint. Yes! No one can copy your fingerprint right off the bat, which makes it a safer security measure. It’s the quickest way to unlock your phone, too, making the Android experience much more convenient.

But despite how convenient such a security feature is, there are times when you’re unable to use it at all. You may even get locked out of your lock screen. And that happens when the fingerprint sensor is not working.

If you’re in a similar situation, you may be asking yourself: Why is my fingerprint not working? Well, you’re just on the right page. Below, we are going to answer that and give you tips on how to fix the issue. We will also include measures to unlock your phone should the issue doesn’t get solved. Read on!

Fingerprint Sensor Not Working Poster

FYI: Why Is My Fingerprint Sensor Not Working

There are many culprits as to why your Android phone’s fingerprint scanner stops working. And it’s important that you get acquainted with them before you start fixing and troubleshooting. That way, you will know whether you can avoid such an issue.

Please note that we are going to list the known causes and add quick fixes for each of them.

Your Fingerprint Is Faded or Deformed

If you’re exposed to work or hobbies that involve using your finger, there’s a high chance of injury or scarring in the area. Like if you’re always playing the guitar, your fingerprint may fade for a while. Or if you got into an accident that burned your finger, your phone won’t be able to recognize it.

Quick Fix:

Register your other fingerprints. Most Android phones these days allow up to 5 fingerprints. You can do this if you can still access your phone via backup pattern/PIN/password.

Your Finger or Fingerprint Sensor Is Wet or Dirty

This is the most common cause of why you can’t unlock your phone using your fingerprint. Most Android phones today use optical fingerprint scanners, which take a picture of your fingerprint for verification. Liquid or dirt can make things blurry for the scanner. This also goes the same way for your phone’s fingerprint sensor. This is pretty common for users with sweaty hands.

Quick Fix:

Before you use the scanner, wipe clean your finger/s or the screen first.

Fingerprint Sensor Android

There’s A Software Bug

Sometimes, your phone encounters bugs due to an issue when you last updated it or the OS version that it’s currently running on is buggy.

Quick Fix:

To fix this, you may simply update your phone to the latest version to get the bugs fixed. Just open the phone’s Settings and scroll down to Software Update. Oftentimes, you can find it in About Phone. The location varies slightly depending on the brand.

But if your phone doesn’t have any available updates, you may wait or have a professional software technician reprogram your phone.

The Fingerprint Hardware is Damaged

Rarely, the fingerprint hardware may get damaged as well. You may have accidentally soaked the phone underwater or it’s just a factory defect.

Quick Fix:

Either way, the only option you can do is take your phone to a professional technician to have the hardware component repaired or replaced or claim your warranty if the device is still within the period.

If none of the causes above is responsible for the fingerprint sensor not working issue, there are advanced solutions you can try.

4uKey Android Unlocker

Fast Android Unlocker

Perfect Solution for Android Lock Screen and Google FRP

  • Erase Pin, patterns, Fingerprints, and face recognition
  • Remove early Samsung lock screen without data loss
  • Bypass Google FRP lock on Samsung in a minute
  • Unlock 6000+ Android mobiles (up to Android 13)

Solutions: Fix Fingerprint Not Working Because of Unknown Causes

Considering that the cause is unknown, there are across-the-board ways you can do to try and fix the issue once and for all. Below we listed some of the most effective ones.

Method 1: Restart Your Phone

Most Android issues, especially minor ones like the fingerprint sensor not working, are usually fixed right after a restart or reboot. Restarting refreshes your phone’s system settings, which gets rid of unknown bugs on apps and features like the fingerprint scanner.

Restart Android Phone

To restart your Android phone, you just need to hold down the Power button until the power options appear on the screen. Then, tap on the Restart/Reboot option. After that, check if the fingerprint scanner is fixed.

Method 2: Wipe the System Cache or Reset the Phone

There are also cases where the unknown errors on the fingerprint scanner could be caused by your phone’s cache. The cache can somehow affect functions that use memory like the fingerprint. So, deleting or wiping the cache clean could possibly solve the issue.

If wiping doesn’t work, you may also go for a more drastic option, which is a factory reset. Resetting will undo all the changes in your phone and restore it back to factory settings, which could fix the fingerprint sensor. You can clear the cache and reset the phone via Recovery Mode. And here’s how to do it:

Step 1

Turn off the phone. Then, press and hold the Volume Down and Power buttons together for 10 to 15 seconds. Then, release them when you see your Phone’s logo. The Recovery Menu should appear right after the logo.

Step 2

There, go down to Wipe Cache Partition. Use the Volume keys to navigate and the Power button to confirm your action. Then, select Reboot System Now after wiping the cache. Check if it worked.

Recovery Mode Android

Step 3

If the fingerprint sensor is still not working, you may proceed to perform a hard reset. Go back to the Recovery Menu using the same button combinations. Then, select Wipe Data/Factory Reset. After the reset is complete, reboot the phone, and try using the fingerprint sensor again.

Please be reminded that performing a hard reset erases your phone’s data. If you can still access your phone using a backup password or PIN, we recommend doing a backup first.

Method 3: Unlock Fingerprint Lock without Finger Tenorshare 4uKey

If you’re locked out of your Android phone because your fingerprint is not working and you also forgot your backup password, you can use Android Unlocker tools. One of the best unlocker programs out there is Tenorshare 4uKey. It can unlock the Fingerprint lock on over 6000+ Android phones, including Samsung, Motorola, LG, and more.

Besides the fingerprint, 4uKey can also unlock and remove passwords, PINs, patterns, and Face IDs. It’s such a flexible Android unlocker tool.

4uKey Android Unlocker

Fast Android Unlocker

Perfect Solution for Android Lock Screen and Google FRP

  • Erase Pin, patterns, Fingerprints, and face recognition
  • Remove early Samsung lock screen without data loss
  • Bypass Google FRP lock on Samsung in a minute
  • Unlock 6000+ Android mobiles (up to Android 13)

Basically, the app works by removing the fingerprint from the lock screen and then resetting the device. This is applicable to most Android phones and Samsung phones (Galaxy S6 and later). However, if your phone is Samsung Galaxy S5 or earlier, you will be able to bypass the lock screen without resetting the device.

In addition, Tenorshare 4uKey can also bypass Google lock (FRP) in case you need it after resetting your phone.

How to Unlock Fingerprint Lock without Finger Using 4uKey

Step 1

On your computer, click on the banner above to download and install the app. Then, run the program and connect your phone using a USB data cable. SelectRemove Lock Screen” on the main screen.

Tenorshare 4uKey Main Interface

Step 2

You will have two options: Remove Screen Lock (with data loss) and Remove Lock Screen Without Data Loss. Choose the former if you have a later Samsung phone (S6 and up) or a different Android phone brand. Then, select the latter if your phone is Samsung Galaxy S5 or an earlier model.

Tenorshare 4uKey Remove Screen Lock

If you need a detailed tutorial on both, check out the full guide for each one below:

Step 3

Considering that you picked Remove Screen Lock, the software will automatically detect the brand of your phone. If it shows the wrong brand, just click on the option: Is your phone not from this brand? Then, select the brand manually. Hit the Start button after that.

Tenorshare 4uKey Remove Screen Lock

Step 4

A warning prompt will appear and ask you if you wish to continue despite the process involving erasing your phone data. If you’re really sure, hit the Yes button to continue. The program will proceed to remove the fingerprint lock immediately after. Just wait for a minute or two.

If the phone in question is Samsung, the process should be finished at this point. If not, proceed to the next step.

Tenorshare 4uKey Remove Screen Lock Successfully

Step 5

After removing the fingerprint, 4uKey will ask you to reset your phone via Recovery Mode. There will be an on-screen guide on how to boot your phone into Recovery Mode. Just follow it and reset the phone from there.

Then, restart the device. The lock screen should be unlocked and there should be no fingerprint or any password, PIN, and pattern to restrict your access.


To find out the fingerprint sensor is not working can be pretty frustrating, especially if you heavily rely on it to unlock your Android phone. If this ever happens to you, don’t worry just yet. There are a few things you can do to troubleshoot the problem. And if the issue is unknown, you may resort to the more advanced solutions presented above.

But if they don’t fix your phone’s fingerprint sensor, consider going to a professional technician or a smartphone repair center. They will surely be able to diagnose why the fingerprint sensor is not working on your device.


A password is more secure than a pattern. The former can be done in many combinations of numbers, letters, and other characters, which makes it more secure and impossible to crack. On the other hand, the latter can be made complicated, but it’s easier to remember. So, anyone who can see your pattern may be able to recall it after a glance or two.

Yes! It’s possible to unlock a locked Android phone without using any password, PIN, pattern, etc. There are a few methods you can try, but the most effective one is through performing a factory reset. You may also use a screen lock remover like Tenorshare 4uKey to make the whole process safe and easier.

Related Reading: