Xiaomi 11 is a flagship smartphone with an advanced under-screen fingerprint scanner, but even this technology sometimes fails. Users often face a situation where the sensor suddenly ceases to recognize fingerprints: the phone does not respond to touch, asks to enter PIN-code or does not offer the option of unlocking biometrics, the causes can be hidden in software errors and hardware malfunctions.
In this article, we will analyze all possible causes of the disappearance of the fingerprint function on Xiaomi. 11 (including models 11 Lite, 11T, 11 Pro, we'll offer step-by-step solutions, from simple reboots to complex firmware manipulations, and we'll teach you how to prevent repeated failures and what to do if the sensor is physically damaged. MIUI 14 Android 13/14.
1.The main causes of a broken fingerprint sensor
The fingerprint scanner on Xiaomi 11 can fail for several reasons, and they are conditionally divided into two groups: software (fixed without repair) and hardware (requires the intervention of the service center).
Programmatic failures are most often associated with:
- 🔄 Update MIUI — New firmware versions may contain bugs that affect the sensor.
- 📱 Failure of the system – for example, after forced reboot or incorrect shutdown.
- 🔒 Application conflict – some programs (especially administrator rights) block biometrics.
- 🛠️ Incorrect settings – disabling unlocking by fingerprint in the security menu.
Hardware problems usually occur after:
- 💥 Hit or fall – even minor mechanical impact can damage the sensor under the screen.
- 🌡️ Overheating/supercooling – extreme temperatures affect sensor sensitivity.
- 🔋 Poor repairs – for example, after replacing the screen or battery.
- 💧 Moisture infestations – even if the phone hasn’t sunk, condensation can disrupt the sensor.
If the sensor stopped working after the system update, the firmware is likely to be a problem, in which case resetting the biometrics settings or rolling back to the previous version will help. MIUI. If the failure occurred after physical impact (hit, fall), most likely, you will need a diagnosis in the service center.
Quick Decisions: What to Do First
Before you carry your phone for repair, try simple methods to restore the sensor, and 60 percent of the time, the problem is solved without complex manipulation.
2.1 Rebooting the smartphone
A banal but effective way: Turn off the Xiaomi 11 for 30 seconds, then turn it back on. If the sensor doesn't work because of a temporary failure of RAM or drivers, it will help.
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If the phone freezes and does not respond to the power button, press the Power button. + Volume Up for 10 seconds for forced reboot.
Checking the unlock settings
Sometimes the fingerprint disappears because the user accidentally disabled it in the settings.
- Open the Settings. → Passwords and security.
- Select a fingerprint.
- Make sure the function is enabled and prints are added.
Removal and re-registration of fingerprints
If the sensor is on but does not recognize your fingers, try removing all the fingerprints and adding them again:
Remove all saved prints in Settings → Passwords and security → Fingerprint.|
Reboot the phone |
Add the print again by following the instructions on the screen|
Check the sensor with different fingers-->
Important: When you add a fingerprint, press your finger tightly and at different angles so that the sensor remembers the maximum area. If the sensor does not respond to any pressing at all, move to the next section.
3. Software failures: deep diagnosis
If simple methods didn't work, the problem could be the system software, and let's look at the most common scenarios and their solutions.
3.1 Conflict after update MIUI
Xiaomi 11 Often loses the functionality of fingerprints after upgrading to new versions. MIUI (particularly MIUI 14 Android-based 13/14). This is due to errors in the drivers of the biometric scanner:
- 🔄 Retraction to the previous version MIUI (if backup is available).
- 📥 Installation of the patch through Settings → The phone. → System update (sometimes Xiaomi releases hot patches).
- 🧹 Cleaning the cache of the system (see the instructions below).
To clear the cache:
- Go to Settings → Applications → Application Management.
- Click on the three dots in the upper right corner and select Show System Processes.
- Find BiometricService or FingerprintService, open and click Clear cache.
- Reboot the phone.
Resetting of safety settings
If the fingerprint sensor doesn’t work, but other biometrics features (like facial recognition) work fine, try resetting your security settings:
- Open the Settings. → Passwords and security.
- Select Reset Security Settings (may require input) PIN-code).
- Confirm the action and restart the phone.
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This method does not delete data from the phone, but resets all biometric settings (including facial recognition and application passwords).
3.3. Virus and malware check
Some viruses block the fingerprint sensor to access the phone, scan with Mi Security or a third-party antivirus (such as Malwarebytes).
- Remove suspicious applications.
- Reset Administrator Rights for Unknown Programs in Settings → Passwords and security → Device administrators.
4. Hardware malfunctions: when repairs are needed
If software methods didn't work, the problem is probably with the sensor itself or the components associated with it.
Damage to the fingerprint sensor
The scanner under the screen on Xiaomi 11 is sensitive to mechanical stress.
- 🔴 The sensor does not respond to any touch (even after rebooting).
- 🖥️ There is no fingerprint icon on the lock screen.
- 🔍 There is no fingerprint in the security settings.
- 💥 Visible cracks or dents on the screen in the scanner area (usually at the bottom).
In this case, you need to replace the sensor. On Xiaomi 11, the fingerprint scanner is integrated into the display module, so replacing only the sensor is often impossible - you have to change the entire screen. The cost of repairs in official service centers Xiaomi starts from 8 000 rubles (2026).
Problems with the plume or contacts
If the sensor is periodically working (for example, after heating the phone or pressing the screen), the problem may be in the disconnected plume or oxidized contacts.
- 🛠️ Replacement of the screen or battery.
- 💦 Moisture infestations (even if the phone didn’t sink, condensation could damage contacts).
- 🔥 Overheating (for example, after long games).
This can only be diagnosed at a service center with a multimeter or visual inspection, and if the problem is in the plume, it will cost less to sell it than replacing the screen (from 2,000 to 4,000 rubles).
Failure of the power controller
Rarely, the fingerprint sensor fails due to problems with the power controller (for example, after a failed firmware or short circuit).
- 🔋 The phone is quickly discharged or not charged.
- 🔄 Accidental reboots.
- 📵 Other sensors (gyroscope, accelerometer) also fail).
In this case, a diagnosis of the motherboard is required. Repair will cost 5,000-15,000 rubles depending on the degree of damage.
How to check if the fingerprint sensor is working at iron level?
5. Recovery of the sensor through the firmware
If the fingerprint sensor stopped working after updating or resetting, flashing the phone can help. This method is only suitable for advanced users!
5.1 Reset to factory settings
The most radical but effective way to get the sensor back up is hard reset, which will delete all the data from the phone, so do a backup first:
- Go to Settings → About Phone → Backup and Reset.
- Select Reset and confirm the action.
- After restarting, reset the phone and check the sensor.
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In 80% of cases, factory reset solves software problems with biometrics, but does not help with hardware breakdowns.
5.2 Manual firmware update via Fastboot
If the reset didn't work, try to reflash the phone manually.
- 🖥️ Computer with installed Xiaomi drivers and Mi Flash Tool.
- 📥 Official firmware for your model (download from Xiaomi Firmware website).
- 🔌 Cable USB (preferably original).
Instructions:
- Turn off your phone and press Power + Volume Down to enter Fastboot mode.
- Connect your phone to your PC and start the Mi Flash Tool.
- Select the downloaded firmware and press Flash.
- Wait until the process is complete (don’t turn off the phone!).
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If after firmware sensor worked, but the phone became slower to work, reset the cache through Recovery (press Power). + Volume Up when you turn on and select Wipe Cache).
5.3 Retracement to the old version MIUI
If the sensor stopped working after the update, you can return the previous firmware version.
- Download the archive with the desired version MIUI (for example, MIUI 13 if the problems started after the update to MIUI 14).
- Move the file to the root of the phone’s memory.
- Go to Settings → About Phone → System Update, click on the three dots in the upper right corner and select Select a firmware file.
- Confirm the installation and wait for completion.
Please note: rollback to old firmware can lead to data loss if you do not backup!
6. Alternative ways to unlock if the sensor is not working
While you’re looking for a solution, you can use other methods to unlock Xiaomi 11:
| Method | How to turn it on | Pluses | Cons |
|---|---|---|---|
| Facial recognition | Settings → Passwords and security → Facial recognition | Quick, it works most of the time. | Less safe, does not work in the dark |
| PIN-code/pattern lock | Installs when the phone is first set up | Reliable, always available | Less convenient than biometrics |
| Smart Lock (unlocked by location) | Settings → Passwords and Security → Smart Lock | Automatic Unlocking at Home/At Work | It only works in certain places. |
| Voice unlocking | Settings → Passwords and security → Voice unlocking | Suitable for people with disabilities | Low accuracy, works only with the owner's voice |
If you temporarily switched to another method of unlocking, do not forget to regularly check the work of the fingerprint sensor – sometimes the problem is solved by itself after the next update. MIUI.
7.Prevention: How to avoid sensor problems in the future
To ensure that the fingerprint sensor on Xiaomi 11 works consistently, follow these recommendations:
- 📱 Avoid mechanical damage – use a cover and glass to protect the screen.
- 🔋 Do not overheat – do not play heavy games when charging, do not leave your phone in direct sunlight.
- 💧 Keep away from moisture, even if your phone has protection. IP53, Condensation can damage the sensor.
- 🔄 Update your firmware regularly, but before installing a new version MIUI Read reviews on forums (for example, 4PDA or XDA Developers).
- 🧹 Clean the system cache every 1-2 months through Settings → Memory. → Cleanup.
It is also not recommended:
- ❌ Install custom firmware (such as LineageOS or Pixel Experience) if you are not sure if it is compatible with the sensor.
- ❌ Use non-original chargers – they can cause voltage surges by damaging the sensor controller.
- ❌ Independently disassemble the phone without experience - the risk of damaging the sensor plume is very high.
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If you wash your hands frequently or exercise, add a spare fingerprint (such as an index and middle fingerprint) to the system, which will help if the main finger is temporarily unrecognized (due to moisture, dirt or microtraumas of the skin).