How to set up a fingerprint on the lock screen Xiaomi: full instructions with nuances

The fingerprint scanner on Xiaomi smartphones is not only a convenient way to unlock, but also an additional layer of personal data protection. However, many users face problems when first set up: the system does not recognize a finger, the sensor does not respond, or the fingerprint suddenly ceases to work after an update. In this article, we will discuss all the steps of adding a fingerprint, from checking hardware compatibility to the subtleties of calibrating the sensor under the screen.

We will focus on models with ultrasonic and optical scanners (for example, Xiaomi 13 Pro or Redmi Note 12 Pro+), where the scanning algorithm differs from traditional capacitive sensors, and you will learn how to avoid common errors such as “failed to add a fingerprint” or “sensor contaminated”, which often occur on MIUI 14 and later.

1. Check your Xiaomi’s compatibility with the fingerprint scanner

Not all Xiaomi smartphones support fingerprint unlock. Even if there is a physical button or area under the screen, the functionality can be limited to the firmware region or hardware features.

• 🔍 Models with a physical sensor: Redmi Note 10/11, Poco X3/X4, Mi 10T. The sensor is located on the back panel or in the power button.
• 📱 Models with a subscreen scanner: Xiaomi 12/13/14, Redmi K50 Pro, Mix 4. Use optical or ultrasonic sensors (the most reliable ones).
• ❌ Unsupported: budget models like Redmi A1 POCO C50, and devices older than 2018 (Mi) A2, Redmi 6).

To find out if your device supports the scanner:

1. Open the Settings. → PapaSSWORD And security → Fingerprint sensor.
2. If you don't have a point, your model is not compatible. Alternatively, face unlock or face unlock. PIN-code.

⚠️ Note: Some firmware for Redmi (e.g. global version) MIUI 13 for Redmi Note 11 Pro) fingerprint function can be hidden. To activate it, you need to change the firmware region to the new one. EEA India.

2 Preparing the smartphone before adding a fingerprint

Before you start scanning, follow the mandatory preparatory steps:

Install. PIN-code|Clean the sensor from fat and dust|Make sure there are no cuts or moisture on your finger.|Turn off the case (if it closes the scan area)-->

If you miss at least one point, the system can produce errors:

• “Sensor contaminated” – wipe the scanning area with an alcohol solution (do not use wet wipes!).
• “Failed to recognize” – the finger should touch the sensor flatly, without tilting.
• “Too fast” – Don’t put your finger away until you feel the vibration.

For models with a subscreen scanner (Xiaomi 13 Ultra, Mix Fold 2) it is important to:

• 🌡️ The temperature of the finger should be room temperature (cold fingers are worse scanned).
• 🔋 Battery charge is at least 20%. At low charge, the sensor can turn off.
• 📶 Turn off the energy saving mode in Settings → Battery.

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

Now, the basic process is that the instructions are universal for MIUI 12-15 and HyperOS, but there are nuances for different types of sensors.

1. Step 1. Open the Settings. → PapaSSWORD And security → Fingerprint sensor.
2. Step 2. Enter the current PIN-code or pattern lock (without it it is impossible to add a fingerprint!).
3. Step 3. Click Add Fingerprint and follow the prompts on the screen.
4. Step 4: Put your finger on the sensor and wait for the vibration to occur, repeat the action 6-8 times, slightly shifting your finger for a full scan.
5. Step 5: Name the fingerprint (e.g., "Indicative Right") and save it.

For ultrasonic sensors (Xiaomi Mix 4, Black Shark 5):

• 👆 The finger should be dry and pressed with force (the sensor reads). 3D-relief).
• 🔄 The scan takes up to 15 seconds – do not interrupt the process.

For optical sensors (Redmi K60, Poco F5):

• 💡 The screen must be on (the sensor uses the backlight of the display).
• ☀️ Avoid bright sunlight – it interferes with scanning.

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If you don't add a fingerprint the first time, try using a different finger (like a thumb instead of an index finger).

4. Configure additional parameters of the fingerprint

Once you add a print, you can customize it. Go to Settings. → PapaSSWORD And security → Fingerprint sensor → Managing fingerprints.

The Quick Unlock feature (available on MIUI 14+) is especially useful: it allows you to unlock your phone without pressing the power button – just touch the sensor. Activates in Additional settings → Unlock with one touch.

⚠️ Warning: If you enable fingerprint unlock for Xiaomi Wallet or banking apps, you will need to enter after rebooting your phone PIN-It's a security measure, you can't turn it off.

5. Solving common errors when adding a fingerprint

Even when you set it up properly, the scanner can malfunction, and we'll look at the typical problems and how to fix them.

Mistake: "Can't add a print. Try again."

• 🧴 Wipe the sensor and finger with a lilaless wipe (fat or sweat interfere with the scanning).
• 🔄 Try adding a print in a dark room (relevant for optical sensors).
• 📱 Switch to the other finger (sometimes the sensor can better recognize the thumb).

Error: "Fingerprint sensor is not responding."

• 🔌 Check if the sensor plume is damaged (relevant after falls or repairs).
• 🛠️ Reset your phone settings to factory (Settings) → The phone. → Reset settings), but make a backup copy beforehand.
• 📦 If the phone is warranty, contact the service center - a hardware defect is possible.

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On models with HyperOS (for example, Xiaomi 14) before resetting the sensor, be sure to turn off the function Data Protection. MIUI Otherwise, after resetting, the phone will require an old one. PIN-code!

Optimizing the scanner: Tips for Long-Term Stability

To make sure that the fingerprint is recognized quickly and without errors, follow these recommendations:

• 🔄 Regularly update the fingerprint: once every 2-3 months, resave the finger (the pattern of the skin changes over time).
• 🧴 Sensor care: wipe the scan area with soft cloth 1-2 times a week.
• 🔋 Avoid discharge: When charged below 15%, the sensor can shut down to save energy.
• 🧊 Cold conditions: in the cold (< -10°C) scanner works worse - warm your hands before unlocking.

For ultrasonic sensors (Xiaomi Mix 4, Black Shark 5 Pro):

• 💧 Avoid getting water on the sensor – despite IP-certification, moisture can temporarily disable it.
• 🧴 Do not use hand creams before scanning – they create a film that interferes with reading.

If you wear gloves or do physical labor often, add a spare fingerprint (like the finger of the other hand) to save the day if your main finger is damaged or dirty.

7. Alternative ways to unlock if the scanner is not working

If the fingerprint sensor is out of order or temporarily unavailable, use alternative methods:

• 🔐 PIN-Password/code: The most reliable option, always works.
• 👤 Unlocking the face: set up in Settings → PapaSSWORD And security → Facial recognition works even in the dark on models with an IR camera (Xiaomi 13 Pro).
• 📍 Smart Lock: Auto-unlocks your phone in trusted locations (home, work) or when connected to a trusted device (e.g. Mi Band). → Smart lockdown.

HyperOS models have Magic Unlock, which is a gesture unlock (e.g. double-touching the screen). → Lock screen → Magic Unlock.

⚠️ Warning: If you use Xiaomi Wallet or banking apps (Sberbank, Tinkoff), disconnect PIN-The code will block payment functions. Always keep the backup method of unlocking!

FAQ: Frequent questions about setting up fingerprints on Xiaomi