If you’re using a Samsung Galaxy S25 Ultra and your fingerprint scanner isn’t working properly, don’t worry. You’re not the only one. Many people have reported problems with the fingerprint sensor after putting on a screen protector. If your phone says “fingerprint doesn’t match” or struggles to recognize your fingerprint, the screen protector might be the problem. In this article, we’ll guide you step-by-step to fix the problem of the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor to work.
Why Is This Happening?
The Samsung Galaxy S25 Ultra uses an ultrasonic fingerprint scanner. This technology is advanced, but it’s also sensitive. If you’re using a screen protector that’s too thick or not made for ultrasonic sensors, the fingerprint sensor might not work properly. This issue is often seen as the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor to recognize your fingerprint.
Step 1: Clean Your Phone Screen and Fingers
Before doing anything technical, let’s start with something simple. A dirty screen or finger can cause recognition issues.
- Wipe the screen gently using a microfiber cloth.
- Wash and dry your hands. Make sure your finger is clean and dry.
- Avoid using cold or wet fingers when trying to unlock your phone.
Cleaning your screen and finger properly can immediately fix some cases of the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor.
Also read this: Samsung Galaxy S25 Ultra vs iPhone 16 Pro Max: The Ultimate Comparison
Step 2: Restart Your Phone
Sometimes, your phone just needs a fresh start. A small software glitch might be stopping your fingerprint scanner from working properly.
To restart your phone:
- Press and hold the Volume Down and Power buttons together.
- Release them when you see the Samsung logo.
Restarting can fix minor bugs and might resolve the issue of the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor.
Step 3: Turn On Touch Sensitivity
Samsung phones come with a feature designed specifically for screen protector issues.
Follow these steps:
- Open Settings.
- Tap on Display.
- Scroll down and find Touch Sensitivity.
- Turn it ON.
This setting makes your screen more responsive, which helps fix the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor issue.
Step 4: Add More Fingerprints
Registering just one fingerprint might not be enough. Adding more fingerprints can increase the success rate.
To add more fingerprints:
- Open Settings.
- Tap Security and Privacy > Biometrics > Fingerprints.
- Enter your password or PIN.
- Tap Add Fingerprint and follow the steps.
Try registering the same finger in different angles or add different fingers. This can solve the problem of the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor to detect correctly.
Step 5: Delete Old Fingerprints and Add New Ones
If you’ve already added fingerprints but it’s still not working, try removing them all and starting fresh.
Steps to remove and re-add fingerprints:
- Go to Settings > Biometrics > Fingerprints.
- Delete all saved fingerprints.
- Tap Add Fingerprint and scan your finger again.
Make sure you scan your finger with the screen protector already on. This ensures the phone learns to recognize your fingerprint through the protector, solving the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor issue.
Step 6: Use a Compatible Screen Protector
Not all screen protectors are created equal. Some block the ultrasonic fingerprint sensor from working.
Look for screen protectors that say:
- “Compatible with fingerprint sensor“
- “Ultrasonic fingerprint friendly“
- “Works with Samsung Galaxy S25 Ultra“
Avoid thick or cheap glass protectors that don’t say they support fingerprint unlocking. This is the most common cause of the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor to function.
Step 7: Update Your Phone Software
Samsung regularly sends updates that can fix bugs or improve fingerprint recognition.
How to update:
- Go to Settings.
- Tap Software Update.
- Tap Download and Install.
Keeping your phone up to date can fix any software bugs that affect fingerprint scanning, especially those linked to the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor.
Step 8: Factory Reset (Last Option)
If nothing else works, consider resetting your phone. But remember, this will delete everything, so back up your data first.
To reset:
- Go to Settings > General Management.
- Tap Reset > Factory Data Reset.
After the reset, re-add your fingerprint with the screen protector on. This might finally fix the Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor.
Conclusion
The Samsung Galaxy S25 Ultra screen protector not allowing fingerprint sensor to work can be annoying, but it’s not hard to fix. Try the simple solutions first—like cleaning the screen, turning on touch sensitivity, or updating your software. If you’re still stuck, switching to a compatible screen protector or resetting your phone can make a big difference.
