Galaxy S20 Fingerprint Scanner Not Working: 10 Tricks

Galaxy S20 Fingerprint Not working

If you have configured the Fingerprint Scanner on your Samsung flagship but eventually ended up with the Galaxy S20 fingerprint scanner not working. Read this article on what you can do to fix it.

Why Is the Fingerprint Scanner Not Working On Galaxy S20?

Fingerprint scanner relies on both software and hardware to work, so failure to work can be due to multiple reasons.

  • Dirt and debris on the sensor
  • Software Issue
  • Defective or damaged fingerprint sensor

Fix Galaxy S20 Not Recognizing My Fingerprint

Considering all the possible reasons, here below we have curated 12 effective ways to resolve fingerprint scanner not working on S20.

Make Sure The Fingerprint Reader And Your Finger Is Dry And Clean

Use a cotton cloth to clean anything interrupting the fingerprint reader. Sometimes, even sweat or water can prevent scanner from reading your Fingerprint. Besides this, anything, for instance, grime on the screen, can do the same. So it’s recommended to clean it gently. 

Scan Your Fingerprint Properly

Only lightly touch the Fingerprint and wait for a few seconds at most; it read print, but don’t press too hard. And make sure that your whole finger is on the scanner without moving your finger around while processing.  

Detach Screen Protector

A screen protector might only trap the heat or its thickness, preventing the scanner sensor from reading your fingerprint. 

Force Restart Phone

The pesky glitch might be resulting fingerprint suddenly stopped working or failed to recognize. To resolve it, you can try out forcing restarting. For this, long-press the Power Button and Volume Button simultaneously for 10-12 seconds and then let out the buttons when the phone reboots. That’s It!

Improve Screen Sensitivity

Try enhancing the touchscreen sensitivity by following the steps below.

  1. Head to the Settings App.
  2. Choose Display.
  3. Hit Touch Sensitivity and toggle to enable it. 

Update Samsung S20 OS

Another recommended solution you give a try is updating the OS. However, before you begin with it, ensure your device is well-charged. Also, make sure that it is connected to the Wi-Fi. Head to the Settings App. Choose Software Update, and if available, tap on Download & Install. 

Disable Fingerprint And Restart Phone

Head to the Settings app. Search and select Biometric & Security. Tap on Fingerprints and then toggle off Show Animation When Unlocking. After this, restart the Samsung S20 by pressing the Power Button and further selecting Green Restart Icon. 

Delete Your Existing Fingerprint And Re-add

Sometimes there might be unknown reasons, and that’s what causes phone fingerprint to work normally. In this case, we recommend deleting and registering the Finger once again. Here is what you need to do. 

  1. Go to the Settings App.
  2. Select Lock Screen And Security.
  3. Tap Fingerprint Scanner.
  4. Hit on Edit from the upper-right side of display. 
  5. On the next screen, you will see registered fingerprints.
  6. Swipe down and hit on Manage Fingerprints. Then, choose Fingerprint you are having an issue with. Lastly, hit Remove. 

Now, restart the Samsung S20 and then re-add the Fingerprint. Hopefully, your issue will be resolved. 

Reset Network Settings 

Some users got the issue resolved right after resetting network settings to fix fingerprint scanner not working on S20. 

  1. Head to the Settings.
  2. Choose General Management.
  3. Tap Reset.
  4. Select Reset Network Settings.
  5. Lastly, tap Reset Settings.

That’s It!

Boot Up The Device To Safe Mode

The corrupted app can be the reason to look on. To verify it, boot up the device to Safe Mode, as it will only allow the pre-installed app to run. To do so, press the Power Button. Long press the Power Off until safe mode appears. Lastly, tap on Safe Mode Icon. That’s It!

Contact Samsung Support 

It’s time to contact the Samsung Support team for further as we have tried all the possible solutions to fix it. 

Check For Hardware Damage

If you have recently experienced a severe accidental fall or replaced some hardware, and now the fingerprint scanner doesn’t work, your device could have a damaged flex cable, a connector, or something suspicious. For this, we suggest carrying the device to the nearest Samsung service station. 

Fix Galaxy S20 fingerprint scanner not working!

Samsung fingerprint scanner to unlock the device has evolved significantly over the years; by performing above-mentioned tips and tricks, you might have resolved it on your Samsung S20. If not so, feel free to share your query in the comment, and accordingly, we will offer you a solution.

My Galaxy S20 fingerprint scanner is not working with certain apps. What should I do?

If you are facing an issue with various apps, ensure the app is compatible with Samsung OS. However, some app is not compatible with finger authentications. Further, you can clear the App Cache. For that, head to Settings. Choose Apps, and select Problematic App from the list. Tap Storage. Lastly, Clear Cache and then hit Clear Data.

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