
Here you will see a hidden menu for testing purposes.

Click on the sensor and follow onscreen instructions. Put on your finger on the fingerprint sensor and see if it detects the finger. If it doesn’t, then there are high chances of hardware damage, and you have to get your device checked by a professional.
Method 4: Disable Fingerprint Gestures
Fingerprint gestures were introduced to all Galaxy devices in 2019, and since then, a lot of users complain about them. Fingerprint gestures help you to assign certain gestures to open the camera app, calendar app, or other things by swiping on the sensor. But this can create confusion for the sensor, so it’s advisable to disable this feature altogether.
Open the Settings app on your device and navigate to the “Advanced Features” option.

Here choose fingerprint gestures and disable the feature.
Reboot your device and see if the issue is resolved or not. If not, follow the below methods.
Method 5: Clear app cache data
Just like all applications, system apps such as lock.apk and fingerprint_sensor.apk keep cache and data. If such data gets corrupted, then the fingerprint sensor will not be working properly. So it is advisable to clear app and cache data for the fingerprint sensor.
Open the Settings app and navigate to the Apps section.

It will show a list of installed system applications.

Here find the”FingerprintASM” app and then on the “Storage” option.

Click on the “Clear cache” button and then on the “Clear Data” button.
Method 6: Re-register fingerprints
With time, your fingers increase in size and may go through a rough phase where your fingers get minor cuts due to regular work and activities. If you haven’t updated the fingerprint patterns in the last 2-3 months, I suggest you re-register the fingerprints again.
- Open device settings and go to lock screen settings.
- Here go to fingerprint lock and delete existing saved fingerprint details.
- Now click on “add new fingerprint” and follow onscreen instructions to re-register your fingerprints.
Method 7: Wipe cache partition
Your device cache is temporary data stored in your device system files. But in some cases, this data may get corrupt and integrate with the present apps and activities of your smartphone. So follow the below steps to wipe the cache partition on your Galaxy A11 and M11 device.
First, turn off your device by pressing the power button.
Now boot your device in recovery mode. You can do this by pressing “Volume Down“, “Bixby” and the “Power” button.

This will open a recovery window. Here navigate to “Wipe cache partition” and press the power button to select the option.

After completing the process, select the “reboot now” option and reboot your device.
Method 8: Check for OS updates
Samsung android team is constantly pushing new updates for all Galaxy devices including Samsung A11 and M11 as well. With these new updates, temporary issues such as connectivity, speaker, device lag, and fingerprint issues can be easily fixed. So check for the latest update available for your particle device and update.
Open the Settings app on your device and navigate to Software update.

Here check if any new update is available, if it is, follow the onscreen instructions to install the update.
Conclusion
If none of the above troubleshooting ways work for you, then the issue might be in the operating system. So go ahead and check with the latest software update available on your smartphone. Also, make sure you don’t have any dust or oil in your fingerprint sensor; having such debris can create further hindrance in the sensor.
I’ve had this phone for a year, and everything else works perfectly. The fingerprint scanner works between 3 and 15 times after rebooting but always stops again. I’ve done all the fixes in this and other guides, and I’m resigned to the fact that there is a permanent flaw somewhere that can’t be overcome.