How to add a fingerprint to Xiaomi: full instructions with tips and life hacks

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 work stable or does not respond at all to touch. In this article, we will discuss all the steps of adding a fingerprint, from preparing the device to solving typical problems, including nuances for new models on HyperOS and older versions of MIUI.

We will focus on hidden settings that the manufacturer does not advertise: how to speed up recognition, why some applications block access to the scanner, and what to do if the sensor stopped working after the update. You will also learn which Xiaomi models support simultaneous storage of up to 5 fingerprints (including backup for one finger), and how to set it up correctly.

If you've just purchased a Redmi smartphone, POCO or the flagship Xiaomi 14 series, or you've been using a device for a long time but you've never set up biometrics, this guide will help you do everything quickly and without errors. And for experienced users, we've prepared a section with advanced tricks, such as how to attach a fingerprint to specific applications or activate a secure folder.

1. Prepare the smartphone before adding a fingerprint

Before you start scanning your finger, make sure your device is ready for the procedure.Missing this stage is the main reason why the sensorlater refuses to work.

First, check the screen and sensor cleanliness, even small contaminants (fat, dust, moisture) can distort the reading, use a microfiber wipe and, if necessary, alcohol wipes for electronics, especially for models with ultrasonic scanners (such as the Xiaomi Mi 11 Ultra), which are sensitive to the slightest interference.

Second, update your firmware. In older versions of MIUI (below 12.5), there have been biometric bugs. To check whether the software is up to date, go to Settings → About Phone → System Update. If a new version is available, install it before you set up your fingerprint.

• 📱 Make sure the screen is not damaged (cracks near the sensor may block the signal).
• 🔋 Battery charge should be at least 20% - at low charge, the system can interrupt the process.
• 👆 Fingers should be dry (wet or sweaty pads scanner does not recognize).
• 🔒 Set a pattern lock or PIN-code - without them, you can not add a fingerprint.

⚠️ Note: If you use a magnetically fastened case (for example, for wireless charging), remove it before scanning.

2. Step-by-step instructions: how to add a fingerprint

Now, the process itself. The instructions are universal for most Xiaomi models, but we'll note the features for different versions of the shell.

Open the Settings. → Passwords and security → If you have HyperOS, the path may be slightly different: Settings → Lock screen → Biometric data → Fingerprint. The system will request the current input. PIN-A code or pattern lock is a mandatory security step.

Follow the setup wizard further:

1. Select a finger (e.g., the index right hand) and the system will prompt you to name it (e.g., "Main").
2. Put your finger on the sensor and slightly raise/lower it until the scanner fixes 100% of the surface. Don't push too hard, it can distort the print.
3. Repeat the process to improve accuracy: Some models (e.g. POCO F5) require 2-3 re-scans.
4. Save the print and test it by locking and unlocking the screen.

Important: If you add multiple fingerprints (for example, for different fingers), scan them alternately, not in a row. Between adding each, pause for 1-2 minutes, this will reduce the risk of recognition errors.

Fully scanned finger surface (100%)|

Imprint recognized from the first touch |

Does unlocking work in the dark (for optical scanners) |

Whether reserve is maintained PIN-code-->

3.Why Xiaomi doesn't add a fingerprint: Common bugs

If the system produces an error like "Failure to add a fingerprint" or "Sensor not responding," the reasons may be both software and hardware.

A special case is the optical scanner models (like the Redmi Note 12 Pro+), which require bright lighting when set up because they use the backlight to scan, and if you add a print in a dark room, the process can end up in error.

⚠️ Note: On some firmware (especially custom) fingerprint scanners may conflict with Magisk or other root access modules. If you use a rooted device, temporarily disable the modules before setting up the biometrics.

4. Advanced settings: optimization of the scanner

Few people know, but Xiaomi has hidden features for fine-tuning biometrics. Here are a few life hacks:

• ⚡ Accelerate recognition: Turn on the option to unlock when you touch the fingerprint settings. Now you do not need to press the screen - just touch the sensor.
• 🔄 Backup fingerprints: Add the same finger twice at different angles, which will improve recognition accuracy if you don't apply the finger perfectly.
• 🔐 Application binding: C Settings → Passwords and security → Applications with fingerprint access can select which programs can use biometrics (e.g. banking applications).
• 🌙 Night mode for scanner: On models with AMOLED-screens (e.g. Xiaomi) 13T) You can reduce the brightness of the sensor backlight through the engineering menu (#4636##).

For owners of flagship models (Xiaomi 14 Pro, MIX Fold 3 is available with Smart Lock, which allows you to automatically block access to your fingerprint in certain conditions, such as when your phone is in an unfamiliar place (according to data). GPS). You can set it up in the settings → Advanced settings → Security and confidentiality.

5. Features of customization on HyperOS and older versions of MIUI

HyperOS is Xiaomi's new shell, which replaced MIUI in 2026, and it changed not only the design, but also the logic of how biometrics work.

HyperOS adds dynamic fingerprint support, which not only analyzes the static fingerprint, but also the trajectory of the finger across the screen, making it harder to trick the sensor (e.g., with casts), but requires more careful scanning, so when you add a fingerprint, you now need to swipe your finger up and down, rather than just press it.

For older versions of MIUI (11 and below), other issues are relevant:

• 🐢 Slow recognition is associated with stripped down scanner drivers. Solution: Update the firmware to at least the point where it's available. MIUI 12.
• 🔄 Random positives are a bug that unlocks the screen from vibration, and it helps to disable the option Unlock when lifting.
• 🚫 There is no fingerprint menu on some budget models (e.g. Redmi). 9A) The scanner is physically disabled, but it's software-enabled, and in this case, only the firmware through Fastboot will help.

If you upgrade from MIUI to HyperOS, all the saved prints are automatically deleted, and you have to add them again, and that's because of the biometrics architecture.

💡

On ultrasonic scanner models (such as the Xiaomi Mi 10 Pro), you can increase the accuracy by adding a wet finger print (wet it a little before scanning), which helps fill in the microscopic pores of the skin that the scanner perceives as part of the pattern.

6.Security: How to protect fingerprint data

Many users worry that their biometric data could be stolen or used by malicious users, and let’s look at how Xiaomi protects this information and what more can be done.

Fingerprints are stored in a secure area of the processor (e.g., Qualcomm Secure Processing Unit for Snapdragon chips or TrustZone for MediaTek), and they never leave the device, even when synchronized with a Mi Account account.

• 🔐 Local storage: The fingerprint data is encrypted using the device's unique key, and when the phone is reset to factory settings, it is deleted without recovery.
• 🛡️ Protection against duplication: Starting with MIUI 13, the system blocks the addition of similar fingerprints (e.g., two index fingers.
• 🚨 Emergency access: In some countries (e.g. the United States), law enforcement can force a fingerprint to unlock your phone. SOS in security settings – it will temporarily turn off biometrics when you press the power button five times.

If you are selling or transferring your phone to another person, it is not enough to simply remove fingerprints through the menu. Be sure to complete a reset (Settings → About Phone → Resetting), as residual data can be recovered using specialized software.

⚠️ Note: Some banking applications (e.g. SberBank Online or Tinkoff) block access to the fingerprint scanner if the phone has a root installed or a bootloader unlocked.This is due to the security requirements of the Central Bank of Russia.

7.Alternative ways to unlock if the scanner breaks

If the fingerprint sensor stopped working permanently (like after the phone fell), don't despair. Xiaomi has a few spare unlock options:

On models with infrared face scanner (for example, Xiaomi Mi 8 Explorer Edition) recognition works even in complete darkness, but you need to add more. 3D-This is a more reliable method than normal photo recognition, because it analyzes the depth of the image.

If neither method works, the last option is to unlock it through Mi Account.

1. On the lock screen, tap “Forgot your password?”
2. Choose Unblock with Mi Account.
3. Enter the username and password from your Xiaomi account.
4. Confirm the action via SMS or email.

Important: This method works only if the phone is tied to an account and has Internet access (via Wi-Fi or mobile network).

💡

If the fingerprint scanner is physically broken, it will cost 1,500-4,000 rubles to replace it, depending on the model. AMOLED-screens (where the sensor is embedded in the display) often require replacement of the entire screen module.

FAQ: Answers to Frequent Questions