When biometrics stop working on your OnePlus 15, unlocking your phone becomes slower and frustrating. Fingerprint or face recognition failures often happen without warning, even when they worked fine before. The issue is usually tied to settings, sensor conditions, or temporary system problems, and most of them are easy to fix.
Why Your OnePlus 15 Biometrics Are Not Working
- The fingerprint sensor or front camera is dirty or blocked.
- Biometrics are disabled or restricted by system settings.
- A recent software update caused temporary glitches.
- Power saving or battery optimization is limiting biometric services.
- Saved fingerprint or face data is incomplete or corrupted.
Restart Your Phone
Restarting clears temporary system processes that may interfere with biometric sensors. It also refreshes background services responsible for fingerprint and face recognition.
Open Settings, and then tap Power.
Tap Restart, and wait for the phone to boot up fully.
Try using your fingerprint or face unlock again.
Clean the Fingerprint Sensor or Front Camera
Dirt, oil, or moisture can prevent sensors from reading your fingerprint or face accurately. Cleaning the sensor often restores normal recognition immediately.
Turn off the screen, and gently wipe the fingerprint area or front camera with a soft cloth.
Make sure there is no moisture or smudge left, then lock the phone and test biometrics again.
Check Biometric Settings
Biometrics may appear set up, but certain options can be disabled without you noticing. Verifying these settings ensures the system is allowed to use fingerprint or face data.
Open Settings, and then tap Security and privacy.
Tap Biometrics, and confirm fingerprint or face unlock is enabled.
Follow the on screen prompts if the system asks for confirmation.
Re Register Your Fingerprint or Face
If biometric data becomes corrupted, the sensor may fail even if it looks enabled. Re registering gives the system fresh data to work with.
Open Settings, and then tap Security and privacy.
Tap Biometrics and remove the existing fingerprint or face data.
Add a new fingerprint or face and complete the setup carefully.
Disable Battery Optimization for Biometrics
Aggressive battery saving can stop biometric services from running properly in the background. Turning off these limits helps maintain consistent unlocking.
Open Settings, and then tap Battery.
Tap Battery optimization and locate biometric related services.
Set them to unrestricted, then test biometrics again.
Update the System Software
Software bugs are a common reason biometrics stop working. Installing the latest update ensures bug fixes and stability improvements are applied.
Open Settings, and then tap About device.
Tap Software update and install any available updates.
Restart the phone after updating and test biometrics.
Biometric issues on the OnePlus 15 are rarely permanent. Once you clean the sensors, adjust the settings, or refresh the system, fingerprint and face unlock usually start working again without further problems.
FAQs
Why does my fingerprint work sometimes but fail most of the time?
This usually happens when the sensor is dirty or the fingerprint was registered at an awkward angle. Re registering the fingerprint carefully often fixes inconsistent detection.
Can a screen protector affect fingerprint recognition?
Yes. Thick or low quality screen protectors can reduce sensor accuracy. Using a compatible protector or enabling higher touch sensitivity can help.
Does factory reset fix biometric issues?
A factory reset can fix deep software problems, but it should be a last resort. Most biometric issues on the OnePlus 15 are resolved without resetting the device.
