Samsung Galaxy A51 Fingerprint Sensor Calibration needed

[Lisy Barça]

I have an issue on Samsung A515U

I already did factory data reset and upgraded to Android 11, nothing works.

I'm searching for firmware of Android 9 for this model and haven't found it yet.

Can anyone help me pls

 

[dornfinger4]

Hello!

You can check the Samsung Fingerprint Sensor with Samsung Phone Code.

Just dial (like typing in a phone number) the Samsung Sensor Code: *#0*#


Then tap on Sensor, where you can check Samsung Accelerometer Sensor, Gyroscope Sensor, DL Magnetic Sensor, and Fingerprint Sensor.


In the Fingerprint section, Tap on “Normal Scan” and see which tests it passes and which one fails.

This is just an information, you can't repair or change anything.

Your plan to downgrade to an older android version is NOT a good idea.

They made very important changes (filesystem, security, framework structure....) in the newer versions. You might brick your phone and can't use it anymore.

To improve your fingerprint take a look at this postings Speed up fingerprint

Good luck!

 

[Lisy Barça]

Thanx for answering
I've already done what you mentioned and didn't work. I checked the sensor dialing that code and it seems to be good

 

[ErayBalyemez]

Same issue here... did you get yours fixed yet?

 

[samsungS6edge]

same here, I do factory reset but no fix.
why this happen ?

solution: I went to a service store and they replace the sensor.

 

[yossidme]

The test reports that the sensor is ok (all tests show as PASS), but I still get the "Fingerprint sensor calibration needed" message.

How can I calibrate the sensor? Where can I find the procedure?

Hello!

You can check the Samsung Fingerprint Sensor with Samsung Phone Code.

Just dial (like typing in a phone number) the Samsung Sensor Code: *#0*#


Then tap on Sensor, where you can check Samsung Accelerometer Sensor, Gyroscope Sensor, DL Magnetic Sensor, and Fingerprint Sensor.


In the Fingerprint section, Tap on “Normal Scan” and see which tests it passes and which one fails.

This is just an information, you can't repair or change anything.

Your plan to downgrade to an older android version is NOT a good idea.

They made very important changes (filesystem, security, framework structure....) in the newer versions. You might brick your phone and can't use it anymore.

To improve your fingerprint take a look at this postings Speed up fingerprint

Good luck!

 

[dornfinger4]

The test reports that the sensor is ok (all tests show as PASS), but I still get the "Fingerprint sensor calibration needed" message.

How can I calibrate the sensor? Where can I find the procedure?

Well this looks like a problem faced by most Samsung users after updating their phones. There is no exact way to fix this since Samsung is yet to release a fix to this issue.
But you can try this:
Change your lock, to swipe to unlock, which will delete your fingerprint data. Then set up your fingerprint lock again, rescanning your fingerprints like you did the first time you set your lock screen options.

 

[Jeppa_1]

I had/have the same issue after installing a backup of one A51 to another A51.
All runs fine, but the fingerprint.
Doing a factory reset -> fingerprint is OK and working.
Using the copy on the "wrong" phone -> fingerprint is NOT working

So it's no hardware issue, but I have not found a solution yet

 

[TFang01]

Try to reflash the whole system with Odin and get the software from samfw