Fingerprint sensor not responding

[vamshi2002]

My fingerprint sensor stopped working suddenly on my A21s and it displays 'Fingerprint sensor not responding. If this keep happening, restart your phone' which I tried doing many times still didn't work. This occurred after recent security update. How to fix this issue. 

[bitjesh]

virjesh

[Samsung_OneUi]

Go to fingerprint settings and remove all your fingerprints data. Add your fingerprints again. Then it will work. Updates the apps like system intelligence and android web view from play store.

[vamshi2002]

Sensor is not working how can I do that.

[Samsung_OneUi]

Have you changed the display of your phone recently?

[vamshi2002]

Yes

[Samsung_OneUi]

Thats why. Because to use fingerprint system you need to use samsung original display. I know it is costly but in original display the fingerprint will work only. Otherwise you can install duplicate display without fingerprint feature.

[vamshi2002]

But a21s is not indisplay fingerprint. How will the back fingerprint gets effected by display.

[Samsung_OneUi]

I know that but i saw in some cases who have installed duplicate display from market, because of low quality gum it affect sensor. Just go to samsung care. Install original display and your finger print will work if it os not affected more before.

[cs_member10]

Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your query, we would request you to kindly perform the following steps to resolve your issue.

Ensure that your fingers are clean and dry.
If the skin on your fingertips is peeling or cracking, or your fingerprint is difficult to capture, the fingerprint ID on your phone may not work.
If your fingerprints fail to unlock the phone while the phone is recharging, remove it from the charger and try again. If you are charging the phone with a charger and data cable from other brands when you use fingerprints to unlock the phone, they may interfere with the fingerprint sensor and cause the recognition to fail.

Clean the fingerprint sensor:
Clean the fingerprint sensor with a soft cloth. Make sure the fingerprint sensor is dry and free from any debris that may cause the sensor to be unable to recognize fingerprints.

Remove fingerprint and set up fingerprint again:

Remove the current fingerprint and set up the fingerprint again. When you touch the sensor to set up your fingerprint, make sure you set the entire fingerprint, including the outer area of your fingertip. Setting the entire fingerprint area enables successful fingerprint recognition with any grip.

How to remove Fingerprint: Settings > Biometrics and Security > Fingerprints > Fingerprint1 > Remove > Remove again to confirm.

How to Set up Fingerprint: Settings > Biometrics and Security > Fingerprints > Add Fingerprint > Scan your fingerprint > Place your finger on the sensor, then lift it off when you feel a vibration > Continue >
Reposition your finger each time to capture the edge of your fingerprint > Tap on Done.

Fingerprint added successfully.

Update the software if available: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-smartphone-how-to-update-software/

Reset your device: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-mobile-how-to-perform-a-factory-res...

In case the issue still occurs. Please visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/

Warm Regards,
Samsung Customer Support