S22 Ultra fingerprint issues

[ashfilan]

Hi

I recently updated to One UI 8, and since then my fingerprint sensor has been acting up. It shows on the screen when unlocking or using certain apps, but most of the time it doesn’t respond. almost like it’s turned off or not working properly . My wife also have the S22 ultra and having the same issue 

[Olanature]

I use S22 Ultra too both i dont have any problem with mine.
I suggest you remove and do fresh fingerprint registration.
Another thing I did when registering, I registered my two thumbs as one. That is i was scanning the two thumbs on one.

[ashfilan]

Thanks ill try this..much appreciated

[Tumelo159]

Remove fingerprints and add new ones. Try that.

[ashfilan]

Thanks will do. Appreciate it

[ashfilan]

This must be new need to wait an hour to remove or change my fingerprints

[Olanature]

Its worth waiting

[ashfilan]

Yeah..

[SherlockHolmes222B · Accepted solution]

Hi
You’re definitely not alone in this,— after the One UI 8 / Android 15 update, quite a few users (especially on S22 and S23 series) have reported fingerprint sensor instability. It’s not a hardware fault — it’s a post-update software calibration issue.

Here’s a detailed way to fix or improve it 👇


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🔧 Step-by-Step Fixes

1. Re-register your fingerprints

Go to Settings → Security and privacy → Biometrics → Fingerprints

Delete all saved fingerprints

Clean your screen (and finger) properly

Add new fingerprints, preferably 2–3 of the same finger (slightly different angles)


> 🔹 Tip: Add your thumb twice or your most-used finger twice — it helps with accuracy.




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2. Reset fingerprint sensor cache

Sometimes the sensor’s software layer becomes unstable after a big update.

Go to Settings → Apps

Tap the ☰ (three dots) → choose Show system apps

Search “Biometrics Service” or “Fingerprint Service”

Tap it → Storage → Clear cache & Clear data

Restart your phone



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3. Disable and re-enable “Fingerprint always on”

Go to Settings → Security and privacy → Fingerprints

Turn off “Show fingerprint icon when screen is off”

Reboot your phone

Then turn it back on



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4. Check for biometric-related patches

Samsung often releases small hotfix updates after major firmware rollouts.

Go to Settings → Software update → Download and install

If a patch appears (even a small MB-sized one), install it — it often includes “biometric stability improvements”.



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5. Try Safe Mode (for app conflicts)

Some third-party lock screen or theme apps interfere.

Hold Power button → Tap & hold “Power off” → Tap “Safe Mode”

In Safe Mode, test your fingerprint

If it works fine → a third-party app is causing it.




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6. Last resort: Wipe cache partition

If all else fails:

1. Power off your device


2. Hold Volume Up + Power until the recovery menu shows


3. Use volume keys → select “Wipe cache partition” → confirm


4. Then select Reboot system now



(This doesn’t delete data, only system cache.)


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⚠️ Note:

Samsung is aware of this fingerprint issue in One UI 8.0, especially on the S22 Ultra and S23 Ultra. A small biometrics update is expected in the next security patch (likely within October or November).

[ashfilan]

Thank you