The fingerprint scanner on Xiaomi smartphones is not just a convenient way to unlock, but also an additional layer of personal data protection. However, many users face difficulties in the first setup: the system does not recognize a finger, the sensor does not respond, or the feature is not on the menu at all. In this article, we will discuss all the steps of adding a fingerprint, from checking hardware compatibility to solving typical errors, including nuances for new models on HyperOS.
We will focus on hidden MIUI settings, which allow you to speed up recognition or add up to 5 fingerprints per device (depending on the model), and you will learn why the scanner can stop working after updating the firmware and how to fix it without resetting to factory settings.
1. Compatibility Check: Is there a scanner on your Xiaomi?
Not all Xiaomi smartphones have a fingerprint sensor. For example, the budget models of the Redmi A or POCO C series often do without it. To avoid wasting time, first make sure that your device supports the function.
There are three ways to check:
- 🔍 Visual inspection: on the back (under the camera) or on the side button on the switch should be an oval / round sensor. on new flagships (for example, Xiaomi 14 Ultra), the scanner is built into the screen.
- 📄 Official specifications: find your phone model on mi.com under "Specifics.
- 🛠️ Diagnostics through code: type in the phone application ##4636##, go to Hardware info and check for Fingerprint.
If the scanner is not physically available, but biometrics are critical to your needs, consider alternatives:
- 👤 Facial recognition (works on most models, but less safe).
- 🔑 Password or pattern lock with increased length (minimum 8 characters).
⚠️ Note: Some models (e.g. Redmi Note 12 Pro)+) The fingerprint scanner is a combination one, which is also an on button. Don't confuse it with a separate sensor!
2 Preparing the phone before adding a fingerprint
Before setting up the scanner, follow the mandatory preparatory steps, which can lead to errors such as "Can't add a fingerprint" or "Sensor is not responding."
Install. PIN-code or password (minimum 4 digits)
Clean the sensor from dirt and fat
Make sure there are no deep cracks or wounds on your finger.
Turn off the power saving mode (if enabled)
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Why do you need to? PIN-The fingerprint scanner is an additional method of unlocking. MIUI/HyperOS requires a primary password (PIN, If you don't install it, you'll have a pattern lock or a text key, in case the biometrics don't work, and if you don't install it, the option to add a fingerprint will be inactive.
How to set a PIN:
- Go to Settings → Password and Security → Screen Lock.
- Choose. PIN-code and enter a combination of 4-16 digits.
- Confirm and wait for the message "Password set".
Also check the cleanness of the sensor: wipe it with a dry microfibre wipe (do not use alcohol or wet wipes!).
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If you have a scanner under the screen, increase the brightness of the display to 70% before adding a fingerprint – this will improve recognition.
3. Step-by-step instructions: how to add a fingerprint
Now, the main process is that the instructions are suitable for all current versions of MIUI 14/15 and HyperOS (2023-2026), but only in the layout of some menu items.
Steps to add a fingerprint:
- Open the Settings. → Password and security.
- Slip on your fingerprint (or add a fingerprint if the scanner is already set up).
- Enter yours. PIN-proof-code.
- Select a finger (such as the Right Hand Index) and follow the prompts on the screen.
- Put your finger on the sensor and raise it when you feel the vibration, repeat the process 6-8 times until the scale is 100% full.
- At the last stage, the system will offer to improve recognition - swipe your finger across the sensor from different angles (for example, the side of the pad).
Once you successfully add a fingerprint, you'll see a message that says "Prime added." Now you can configure the scanner's actions:
- 🔓 Unlocking the screen (on by default).
- 🛡️ Confirmation of payments (in Mi Pay or banking applications).
- 🔐 Access to secure folders (in the Gallery) → Private files).
⚠️ Warning: If you add a fingerprint, you get a "Dirty Sensor" error, wipe it with a dry wipe and try again. Don't use sharp objects to clean it!
What if the scanner does not respond to touch?
4. Configure additional parameters of the scanner
Few people know, but Xiaomi has hidden options for fine-tuning biometrics.
- 🚀 Accelerate recognition (reduce the unlock delay).
- 👆 Add gestures (for example, swipe over the sensor to open the notification curtain).
- 🔄 Change sensitivity (good for wet or rough fingers).
How to open the advanced settings:
- Add at least one print (see the previous section).
- Return to Settings → Password and Security → Fingerprint.
- Slip on Additional settings (or Sensor settings on HyperOS).
Recommended parameters for optimal operation:
| Parameter | Recommended value | What do you need? |
|---|---|---|
| Recognition speed | Tall. | Reduces the delay when unlocking |
| Vibration upon activation | On. | Tactile feedback |
| Unlocking in your pocket | Off. | Prevents accidental pressing |
| Sensitivity | Medium | Balance between accuracy and speed |
On models with a scanner under the screen (for example, Xiaomi 13T Pro) available option "Sensor illumination" and turn it on if the scanner does not work well in bright sunlight.
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Unlocking your pocket in the "On" position can cause accidental taps and battery discharge. Turn it off if you wear tight clothes.
5. Typical errors and their solutions
Even when you set it up properly, the scanner can malfunction, and let's look at some of the most common problems and how to fix them.
Mistake 1: "Failure to add a fingerprint. Retry"
Causes and solutions:
- 🧴 Dirty or wet finger: wipe your finger and sensor, wait for full drying.
- 🩹 Skin damage: If there are cuts or calluses on your finger, try the other finger.
- 🔋 Low battery (less than 15%): connect the charger and try again.
- 📱 System failure: Reboot your phone and try again.
Mistake 2: The scanner does not respond to touch
Possible causes:
- 🛠️ Hardware malfunction: if the sensor is physically damaged (cracks, dents), repair is required.
- 🤖 Conflict with shell: reset the settings MIUI before the factory (Settings) → Additionally. → Resetting settings).
- 🔄 Outdated firmware: update the system in Settings → The phone. → Update of the PO.
Error 3: The fingerprint is only recognized from 3-5 attempts
How to improve accuracy:
- 🔄 Remove the fingerprint: remove the old and create a new one, paying attention to the edges of the finger.
- ⚡ Disable "charge savings": background restrictions can interfere with the sensor.
- 📉 Reduce sensitivity in additional settings (if too high).
⚠️ Warning: If the scanner stopped working after a phone drop or moisture hit, do not try to disassemble the device yourself.
6. Features of setting up on HyperOS (new models 2026)
With the release of HyperOS (replacing MIUI on Xiaomi 14 and Redmi K70 flagships), the scanner configuration interface has changed.
- 🆕 New way in the menu: Settings → Security → Biometrics and passwords → Fingerprint.
- 🎨 Add-on animation: instead of static clues, dynamic graphics are now used to show you how to properly apply your finger.
- 🔒 Improved protection: The fingerprint can now be used to confirm changes to system settings (e.g., enable developer mode).
HyperOS also has a "Pinprint + PIN" feature, a combined authentication feature where you scan your finger first and then ask for digital code, which improves security but slows down unlocking a little.
How to enable combined authentication:
- Go to Settings → Security → Biometrics and Passwords.
- Select the Combined Unlock.
- Activate the switch next to the fingerprint + PIN.
- Follow the instructions on the screen to link the print to PIN-code.
On models with a scanner under the screen (Xiaomi 14 Pro, Redmi K70 Pro), HyperOS has added the option "Unlock when pressed." If it is turned on, the screen will unlock immediately when the sensor is touched, without having to hold the finger.
7.Security: How to protect data if your phone is stolen
A fingerprint is convenient, but less secure than a complex password. If your Xiaomi falls into the wrong hands, an attacker can:
- 🔓 Unlock the device with your fingerprint (if you are asleep or unconscious).
- 💳 Confirm payments in banking applications (unless two-tier authentication is configured).
- 📂 Access to personal files in private folders.
How to minimize the risks:
- 🔐 Use the fingerprint only to unlock, and for payments and critical actions – a complex password.
- 🔄 Regularly update your prints (every 3-6 months) as the pattern changes over time.
- 🚨 Set up a remote lock via Mi Account: Settings → Xiaomi account → Remote control.
- 📱 Enable device encryption: Settings → Additionally. → Encryption and credentials.
If the phone is stolen, immediately:
- Block it through i.mi.com (Find the device section).
- Change passwords from your linked accounts (Google, banks, social networks).
- Contact the police with the IMEI device (you can find it on the box or via *#06#).
⚠️ Note: In some countries (e.g. the United States), law enforcement agencies may force the phone to be unlocked with the owner's fingerprint.If you hold sensitive information, only use a password for critical data.