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How to Fix Samsung S20/S21/S22 Fingerprint Sensor Not Working

by Anna Sherry   Updated on 2022-07-21 / Update for  Samsung

Many Samsung Galaxy phones like S20, S21, S22 come with an built-in ultrasonic under-display fingerprint sensor. With ultrasonic fingerprint ID, Samsung users can conveniently and quickly unlock their phone, authenticate purchases, or sign into certain apps. While fingerprint is by far the most utilized biometric method for unlocking Samsung phones and keeping keep personal data protected, sometimes users find it does not work properly.

Samsung fingerprint sensor not working, fingerprint sensor not responding Samsung, and fingerprint not recognized, are some of the most frequent complaints of Samsung Galaxy users today. If you are also searching "What to do when my fingerprint sensor is not working Samsung" online- read on to find the answers. We've come up with 7 solutions to help you solve this problem.

Part 1: Why Is My Fingerprint Not Working on My Samsung

Before jumping on to the detailed solutions, one should know the root cause of the problem to solve it effectively. Here are all the possible reasons for the Samsung fingerprint sensor not working issue.

  • Dirty or Wet Finger

    Most times the problem is with how you are operating the device. For example, if your fingers are dirty or have water or oil on them - the fingerprint sensor will not be able to recognize your fingerprint, hence failing to unlock the device.

  • Software Issue

    Another casue for your Samsung fingerprint sensor not working can be related to a software bug. Mostly when your software is not up to date, it can lead to complications, preventing the fingerprint sensor from working properly.

  • Hardware Bugs

    Apart from software, hardware can also cause problems regarding the fingerprint sensor in your phone. For example, if you drop your phone and anything gets damaged inside the fingerprint sensor - your phone’s fingerprint sensor will stop working.

Part 2: Common Ways to Fix Samsung S20/S21/S22 Fingerprint Sensor Not Working

Now that we know the root of the problem, here are 6 common ways to fix Samsung S20/S21/S22 fingerprint sensor not working.

Fix 1: Clean Your Finger and the Screen

If you are facing the issue of fingerprint sensor not responding, start by cleaning your finger and phone screen as any dirt and gunk can lead to a failure in scanning. Take a microfiber cloth and a screen cleaner. Spray it on the cloth and start wiping your phone down. Once you think the screen is clean and your fingers are not wet, try your luck again to unlock your phone.

Fix 2: Restart Your Phone

Sometimes the Samsung fingerprint not working issue can be easily solved by restarting your device. A simple reboot of your device can often fix temporary bugs or glitches on your phone like app crahing, unresponsive fingerprint sensor, etc. So, before hopping on to the other solutions - restart your device by long-pressing and holding the power and volume down buttons. Upon restart, try unlocking the phone with your fingerprint.

Fix 3: Remove Screen Protector

Apart from software issues, the Samsung fingerprint sensor can stop working due to your screen protector too. If you are facing the issue of Samsung S21 fingerprint sensor not working with screen protector - check if the screen protector on the fingerprint sensor area is scratched or damaged. If so, try to remove the screen protector and replace with a new one. Remember, take it off gently to ensure you don't damage the phone's screen while removing the screen protector.

Fix 4: Remove Your Fingerprint and Add New One

If your device keeps failing to recognize your print properly until now, then try to remove the existing fingerprint and add a new one from your phone settings. By doing so, the fingerprint not working Samsung issue can be addressed and hopefully function well.

Follow the steps below to remove and register your fingerprints again.

  • Open the Settings app and navigate to Biometrics and Security > Fingerprints.

    remove fingerprint on samsung s20/s21/s22
  • Enter your PIN, pattern or password.
  • Tap the registered fingerprint and then tap Remove.
  • Tap Remove again to confirm.

    confrim to remove fingerprint on samsung s20/s21/s22
  • Now, tap on Add Fingerprint option and follow the on-screen instructions to register your fingerprints.
  • This will hopefully bring your fingerprint sensor back to life. When the new fingerprint is added, reboot your phone and then unlock the screen with the new fingerprint.

Fix 5: Wipe Cache Partition to Fix Samsung Fingerprint Sensor Not working

Apart from the quick hacks, there are other ways to fix your Samsung fingerprint sensor if it is not working. For example, wipe the cache partition. Sometimes when your device cache is almost full, it can lead to phone lag and due to which your fingerprint sensor becomes unresponsive. In this case, you can try clearing the temporary data on your phone to get the Samsung fingerprint sensor not working issue resolved.

Here are all the steps to wipe data (cache) on your Samsung S20/S21/S22 via recovery mode. To advoid data, it's recommended you should backup your Samsung phone first.

  • Turn off your Samsung device.
  • Hold onto the Power button and the Volume up button simultaneously.
  • When you see the Samsung Galaxy logo, let go of the buttons and your device will enter into the Recovery mode.
  • From the options, highlight Wipe cache partition option with the help of volume buttons, and confirm your selection with the help of your Power button.
  • Now press the Volume down button to highlight Yes and then press the Power button to select. Your cache will be wiped immediately.
  • Once finished, Reboot system now will be highlighted, so simply press the Power buttom to reboot the device.

    wipe cache partition to fix samsung fingerprint sensor not working
  • Once your phone restarts, try your luck with the fingerprint to check if the Samsung S20/S21/S22 fingerprint sensor not working issue still occurs.

Fix 6: Repair Android System to Fix Fingerprint Not Working Samsung

If you're still having issues with your Samsung fingerprint sensor after trying all the above methods, then the culprit for Samsung fingerprint sensor not working could be Android system problems. To solve this, you can rely on Tenorshare ReiBoot for Android to get your Android system repaired. Designed for repairing Android syetem issues, ReiBoot for Android can help fix almost any software-related issues including fingerprint malfunctioning, app crashing, Samsung pass not working and so on.

Blow are the steps to fix fingerprint not working samsung issue using ReiBoot for Android.

  • Download and launch ReiBoot for Android on your computer. Then connect your Android to the computer and enable USB Debugging on your phone.
  • From the options presented, select "Repair Android System."

    repair android system to fix fingerprint not working samsung
  • Click "Repair Now" and you will be asked to select information for your device.

    repair android system to fix fingerprint not working samsung
  • The program will start downloding the latest firmware package for your device. Once it's downloaded, click on "Repair Now" to start the system repair process.

    repair android system to fix fingerprint not working samsung
  • Wait for device to be repaired. Once done, your device will boot up as normal and the Samsung fingerprint not responding issue casued by software-related bugs should should no longer exist.

    repair android system to fix fingerprint not working samsung

Part 3: Remove Fingerprint Lock to Fix Samsung Fingerprint Not Working

In the above section, we've come up with 6 ways to fix fingerprint sensor not working on Samsung S20/S21/S22, under the condition that you can unlock your phone with your password. But what if you're locked out of your phone due to fingerprint not working and your forget the lock screen password? Well, don't fret. A powerful Android unlock tool called Tenorshare 4uKey for Android will come to your rescue.

4uKey for Android can assist you to enter your device when no unlock means such as password, pattern or fingerprint lock are working for your smartphone. The only drawback of it is that you will lost all the data on your phone. That said, here's how to remove fingerprint lock to get fingerprint not working Samsung addressed.

  • After downloading and installing Tenorshare 4uKey for Android on your computer, connect your phone to the computer and let the program detects your phone, then select "Remove Screen Lock."

    remove fingerprint lock to fix samsung fingerprint not working-1
  • Again, select Remove Screen Lock and click Start to proceed.

    remove fingerprint lock to fix samsung fingerprint not working-2
  • When a pop-up appears, click "Yes" to confirm that you're willing to erase all the data on your phone.

    remove fingerprint lock to fix samsung fingerprint not working-3
  • Once the removing process is done, you'll be prompted to put your phone into Recovery mode. Follow the on-screen prompts to continue.

    remove fingerprint lock to fix samsung fingerprint not working-4
  • Now wait for 4uKey for Android to remove the lock screen on your phone. Once done, your malfunctioned fingerprint lock should be removed as well.

    remove fingerprint lock to fix samsung fingerprint not working-5

Conclusion

Samsung fingerprint sensor not working can be an annoying occurrence. Therefore, we have curated a guide to help you with it. Follow the steps mentioned in this guide and try your luck again with the fingerprint sensor. If your Samsung phone gets lag and cause the fingerprint sensor not to respond, we suggest downloading Tenorshare ReiBoot for Android to repair your Android system. In case you're lock out of your phone, try using Tenorshare 4uKey for Android to remove your fingerprint lock.