MIUI Biometric on Xiaomi: what is this program, why it is needed and how to configure it

If you are the owner of a Xiaomi smartphone and notice a mysterious item in the list of applications or system processes MIUI Biometric, don't be too quick to remove it. It's not a virus, it's not a superfluous software, it's a key security component of your device. It's responsible for all the biometric functions, from fingerprint unlocking to facial recognition.

In this article, we will explain in detail what is MIUI Biometric, how it is integrated into firmware MIUI, And why you can't just turn it off without consequences, and you'll learn what data the app stores, how it interacts with other Xiaomi services, and what to do if it starts consuming too much resources. And also – we will answer frequent questions about security and compatibility with different models of smartphones.

Spoiler: No. MIUI Biometric won't be able to use a fingerprint scanner, or Face Unlock, or even some banking apps, but the good news is that it can be optimized to run faster and not slow down the system.

What is it? MIUI Biometric and why you need it

MIUI Biometric is a system application that manages all biometric data on Xiaomi, Redmi and smartphones. POCO. It's in charge:

• 🔍 Fingerprint scanner (including subscreen and side scanner)
• 👤 Face recognition (Face Unlock)
• 🔐 Storage and encryption of biometric templates
• 📱 Integration with applications (banks, payments, protected folders)

In fact, it's a bridge between the hardware sensors (scanner, camera) and the operating system, without which the fingerprint scanner is physically functional, MIUI The app runs in the background and only activates when you need to unlock your phone or confirm an action (e.g., payment via Google Pay).

It is important to understand that MIUI Biometric is not a separate program that can be removed without consequences, it's deeply integrated into the firmware and is linked to the software:

• 🔒 com.android.biometrics (standard Android component)
• 📁 miui.biometric (Xiaomi package)
• 🔑 Keystore (Storage of Cryptographic Keys)

If you try to disable or remove this application, you will lose access to all biometric functions. Moreover, some banking applications (for example, SberBank Online or Tinkoff) may stop working, as they require fingerprint confirmation through standard ones. API Android, which is exactly what it handles MIUI Biometric.

How it works MIUI Biometric: Technical details

To understand why. MIUI Biometric is so important, let's look at how it works at the system level. When you register a fingerprint or a face, what happens is:

1. The scanner reads biometric data (such as a fingerprint) and converts it into a digital template.
2. MIUI Biometric encrypts the template and saves it in a protected memory area (Trusted Execution Environment, TEE).
3. When unlocked, the scanner reads the data again, and the application compares it to the saved template.
4. If a match is found, the system unlocks the device or confirms the action.

The whole process takes place in a fraction of a second, but involves several layers of protection:

Critical moment: MIUI Biometric DOES NOT share your biometric data with Xiaomi or third parties, all templates are stored locally on the device and are tied to its hardware identifier, as confirmed by both official Xiaomi documentation and independent security research. If you use Face Unlock, your face photo may be temporarily processed in RAM, but not stored in a gallery or system folders.

Fun fact: on some flagship models (for example, Xiaomi 13 Ultra or Redmi) K60 Pro) MIUI Biometric works in tandem with a separate security chip (Qualcomm Secure Processing Unit or MediaTek Secure Element) that adds another layer of security protection against hacking.

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If you sell or transfer your smartphone to another person, be sure to delete all biometrics in the settings. Even after resetting to factory settings, some templates may remain in protected memory if not manually cleared.

Wherever MIUI Biometric in Settings and How to Manage It

Unlike regular applications, MIUI Biometric doesn't have a separate icon on the menu, and you can only manage it through system settings. Here's how to find and customize biometrics on your Xiaomi:

Main paths:

• 📱 Settings → Lock screen → Fingerprint (for scanner)
• 👤 Settings → Lock screen → Face recognition (for Face Unlock)
• 🔧 Settings → Annexes → Application management → System applications → MIUI Biometric (to view information)

If you want to see how much resources an app consumes, do the following:

1. Open Settings → Applications → Application Management.
2. Click on the three dots in the upper right corner and select Show System Processes.
3. Find it on the list. MIUI Biometric and tap on it.
4. Here you will see data on memory consumption, battery and resolutions.

Note that you won't find "Delete" or "Disable" buttons in the app menu. The most you can do is:

• 🔄 Clear the cache (if the application starts to slow down)
• 🚫 Prohibit auto-run (but it can disrupt biometrics)
• 📵 Limit background activity (not recommended)

Clear the app's cache|Reboot your smartphone|Update MIUI last-minute|Remove and re-introduce fingerprints|Reset the security settings-->

If you notice that MIUI Biometric is constantly hanging in the processes and loading the processor, this can talk about the processor:

• 🐞 Failure of the scanner (for example, after the fall of the phone)
• 🔄 Conflict with the updated firmware
• 📱 Hardware problems (wear scanner on older models)

In such cases, the first thing you can do is try to remove all the fingerprints and faces you've saved, and then add them back. If that doesn't work, check for updates. MIUI Or go to the service center.

Security MIUI Biometric: Myths and Reality

One of the most common concerns of users is the security of biometrics, and let's look at what's true and what's myth.

Myth 1: Xiaomi sends my fingerprints to China.

⚠️ Note: This is not true. All biometric templates are stored locally in encrypted form and are not transmitted to Xiaomi servers, as confirmed by official statements of the company and independent security audits.

Myth 2: If someone copies my fingerprint, they can unlock the phone.

Partly true, but with reservations.Modern Xiaomi scanners (starting with the MIUI 12) use live detection, they check not only the fingerprint pattern, but also signs of living tissue (for example, pulse or electrical conductivity). Therefore, it is almost impossible to fool the scanner with a silicone copy.

Myth 3: Face Unlock is unreliable and easily fooled by a photo.

It depends on the model of the smartphone. Redmi's cheap phones can actually use a simplified one. 2D-A face-recognition camera that can be fooled by a quality photo, but flagship models (like Xiaomi 14 or Xiaomi) POCO F5 Pro) equipped 3D-It's an infrared-lighted face scanner that analyzes the depth and contours of the face in three-dimensional space, and it's impossible to fool the image.

To check how reliable the biometrics on your device are, pay attention to the following points:

• 🔒 The presence of a chip TEE (There are on all Xiaomi smartphones with Snapdragon processors 8xx or Dimensity 1xxx)
• 📸 Type of face scanner (2D or 3D — You can find out in the characteristics of the model)
• 🔄 Version. MIUI (Older versions may have vulnerabilities patched in new updates)

If you use biometrics for banking or sensitive data storage, we recommend:

1. Update MIUI to the latest version.
2. Enable two-factor authentication for critical applications.
3. Regularly check the list of saved fingerprints and faces in the settings.

Problems with MIUI Biometric and how to solve them

Despite the reliability, sometimes MIUI Biometric can malfunction. Here are the most common problems and ways to solve them:

1. The fingerprint scanner doesn't recognize the finger.

If your smartphone has stopped recognizing the fingerprint, try:

• 🧼 Clean the scanner (fat and dirt often accumulate on underscreen scanners).
• 🔄 Remove and re-add the fingerprint (sometimes the pattern is damaged).
• 🔋 Reboot your phone (the failure may be temporary).
• 🛠️ Check the scanner for physical damage (for example, after a fall).

2.Face Unlock is slow or not working

The following recommendations apply to Face Unlock:

• 📸 Make sure the camera is not covered with a protective glass or cover.
• 💡 Check the lighting (in the dark) 2D-scanners are worse).
• 👓 Take off your glasses or headgear (if you add a face without them).
• 🔄 Re-register your face in different lighting conditions.

3. MIUI Biometric is consuming too much battery

If the app has started to “eat” the charge, try:

• 🧹 Clear the cache in the application settings.
• 🔄 Update MIUI (In new versions, energy consumption is optimized).
• 🚫 Disable unnecessary biometric features (e.g. Face Unlock if you don’t use them).
• 🔧 Reset security settings (in extreme cases).

If nothing helps, there may be a hardware problem, such as the older Redmi Note models that wear out the fingerprint scanner over time, and the system spends more resources on it, in which case only a replacement module will help.

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Before you reset or update your firmware, make sure you have a backup of your fingerprints and faces, and after resetting, all the biometrics will be deleted and you will have to register them again.

4.The application gives an error "Biometric service not available"

This error usually appears after the update. MIUI Or resetting it to fix it:

1. Go to Settings → Applications → Application Management.
2. Find it. MIUI Biometric and press Storage.
3. Clear the cache and data (Warning: This will delete all the saved prints!).
4. Reboot your phone and re-add the biometrics.

If the error persists, the system file may be corrupted, in which case only flashing the device through Fastboot or Recovery will help.

MIUI Biometric on different models of Xiaomi: features

Functionality MIUI Biometric can vary depending on the smartphone model. Here are the key differences:

On flagship models (Xiaomi 13 Ultra, Mix Fold 3) MIUI Biometric supports:

• 🔐 Multi-biometry (unlocking both the fingerprint and the face at the same time).
• 💳 Payment authentication via Face Unlock (for Google Pay and banking applications).
• 📁 Protected folders with access only by biometrics.

On budget devices (Redmi) A2, POCO C55) functionality:

• 🚫 No. 3D-face scanner.
• 🔒 Face Unlock only works to unlock the screen (not for payments).
• 📱 Biometrics may conflict with some applications due to an outdated version MIUI.

If you are planning to buy a Xiaomi smartphone and biometrics are important to you, pay attention to:

• 📌 Type of scanner (optical subscreen is more reliable than capacitive scanner).
• 📸 Presence 3D-Face scanner (if you need Face Unlock for payments).
• 🔄 Version MIUI (There may be vulnerabilities in older versions).

How to completely reset biometric data on Xiaomi

If you are selling your phone, transferring it to another person, or simply want to delete all biometric data, do the following:

Method 1: Through settings

1. Go to Settings → Lock screen → Fingerprint.
2. Enter yours. PIN-code.
3. Click on the saved print and select Remove.
4. Repeat for all prints.
5. For Face Unlock, repeat the steps in Face Recognition.

Method 2: Reset all security settings

1. Open Settings → About the phone → Reset settings.
2. Select Reset screen lock settings.
3. Confirm the action (you will need to enter the current password).

⚠️ This method will remove not only biometrics, but also all passwords, PIN-After the reset, you'll have to reset the lock.

Method 3: Complete reset to factory settings

This is an extreme measure that will remove all data from your phone, including biometrics, and only do this if you're selling the device or transferring it to another person.

1. Create a backup copy of important data.
2. Go to Settings → About Phone → Resetting → Delete all data.
3. Confirm the action and wait for the process to be completed.

Once reset, all biometric patterns will be erased from the protected memory, but as mentioned earlier, some models may store residual data in hardware modules. If you're paranoid about security, it's recommended that you sell your phone before you do:

• 🔄Several times add and delete random fingerprints to overwrite old data.
• 📱Use a third-party tool like Fastboot to completely wipe the persist partition (requires unlocking bootloader).

FAQ: Frequent questions about MIUI Biometric