The Xiaomi Redmi Note 10 is one of the most popular mid-range smartphones that combines performance and functionality, with a side-finger scanner that allows for quick and safe unlocking of the device, but many users have difficulty first setting up the sensor: the system does not recognize a finger, the fingerprint is not saved correctly, or the scanner is delayed.
In this article, we will discuss not only the basic process of adding a fingerprint, but also the nuances that allow you to increase the accuracy of recognition by 30-40% (according to Xiaomi tests on MIUI 14 firmware), you will learn how to correctly place your finger on the sensor, what settings optimize the scanner, and what to do if the system refuses to save the fingerprint, and also – we will reveal a secret trick with registering one finger at different angles for maximum convenience.
Preparing your smartphone before adding a fingerprint
Before you start scanning, make sure your Redmi Note 10 is ready for the procedure. Failure to follow simple rules can lead to sensor malfunctions or poor quality of the saved fingerprint.
First, check the cleanness of the sensor and finger. Fat marks, moisture or small particles of dust distort the scan. Wipe the side button (where the scanner is located) with a dry microfiber wipe, and get your finger wet with a paper towel. Avoid alcohol-containing liquids - they can damage the protective coating of the sensor.
- 📱 Update. MIUI Up to the latest version: Go to Settings → The phone. → System update: In old firmware, the scanner may not work smoothly.
- 🔋 Charge the battery to at least 20%. With a low charge, the system can interrupt the fingerprint saving process.
- 🔒 Set a pattern lock or PIN-Without them, you can't add a fingerprint, that's a security requirement for Android.
⚠️ Warning: If you recently dropped your phone or noticed a crack near the power button, don't use a fingerprint scanner. A damaged sensor may give false positives or fail completely.
It’s also worth considering that on the Redmi Note 10 (unlike Xiaomi’s flagship models), the scanner doesn’t support wet fingers. If you’ve just washed your hands or are in high humidity, wait 5-10 minutes before scanning.
Step-by-step: how to add a fingerprint
Now, the process itself. The configuration interface may vary slightly depending on the version of MIUI, but the overall sequence of actions remains the same. Follow the instructions carefully, errors in the scanning phase will cause the phone to not recognize your finger well.
Open the Settings. → Passwords and security → Fingerprint: The system will request the current pattern lock or PIN-After confirmation, click Add Fingerprint.
- Place your finger on the side sensor (it's paired with the power button). Don't press too hard -- just a little touch is enough.
- Raise and lower your finger as the indicator on the screen fills up. The system scans different parts of the pad.
- Change the angle of your finger after the first successful scan, for example, first apply your finger straight, then at an angle of 30-45 degrees, which will improve the accuracy of recognition.
- Repeat the process for one finger 2-3 times to cover all areas. MIUI allows you to save up to 5 fingerprints.
Important: don't move your finger on the sensor, just make a good touch, and if the system says "I couldn't recognize your fingerprint," wipe the sensor and finger again.
Finger dry and clean |
Sensor intact |
Phone doesn't overheat |
Installed PIN-code-->
Optimization of the scanner: secret settings
Even after a successful fingerprint addition, the scanner may not work perfectly: it can slowly recognize, require multiple attempts, or fail at all the first time. Redmi Note 10 has hidden settings that help improve the situation.
The first thing you need to do is calibrate the sensor.
- Go to Settings. → The phone.
- Click 5 times in a row on the MIUI version to activate the developer mode.
- Go back to the basic settings, open Additional → for developers.
- Find the Debug fingerprint scanner option and turn it on.
- Reboot the phone.
After restarting, the sensor will work faster, as the system will reset the recognition cache, and we also recommend turning off the unlock animation, which will speed up the scanner's response:
- Go to Settings. → Lock screen.
- Select Unlock Animation and set the value No.
💡
If the scanner does not work well in winter, warm the phone in your hands for 1-2 minutes before use.
Frequent Mistakes and How to Avoid Them
Many Redmi Note 10 users face typical problems when setting up a scanner, and let's look at the most common ones and how to solve them.
| Problem. | Reason. | Decision |
|---|---|---|
| The scanner doesn't recognize the finger. | Too fast or incomplete scanning | Remove the fingerprint and add again by slowly lifting your finger. |
| Sensor contaminated error | Dust or fat on the scanner | Wipe the sensor with a dry wipe, avoid wet rags |
| The phone vibrates but does not unlock. | Conflict with cover or film | Remove the cover or glue the protective film without closing the sensor |
| The scanner works once. | Too many fingerprints saved. | Remove unnecessary prints, leave 2-3 basic ones |
Another common mistake is to try to add a wet or cut finger print, so if there are sores or calluses on the pillow, the sensor may not read the picture correctly, and in such cases, use alternative unlocking methods (PIN or facial recognition) temporarily.
⚠️ Warning: If after all the manipulations the scanner is still not working, check the integrity of the sensor plume. This will require disassembling the phone - better contact the Xiaomi service center.
How to remove or change saved prints
Over time, you may need to update your fingerprints (for example, if you hurt your finger) or remove the old ones.
- Open Settings → Passwords and Security → Fingerprint.
- Enter. PIN-proof-code.
- Click on the saved print and select Remove or Rename.
If you want to completely reset all your prints, there are two ways:
- 🔄 Through Settings: Remove each print manually (as described above).
- 📛 Through resetting settings: Settings → The phone. → Resetting settings → Resetting security settings, it'll delete all prints, PIN-Wi-Fi codes and passwords.
After removing your fingerprints, make sure to add new ones, otherwise unlocking your phone will be less convenient.If you plan to sell or transfer the Redmi Note 10 to another person, make sure to reset your security settings!
What to do if you forget PIN-code after all fingerprints have been removed?
Redmi Note 10 scanner compared to other Xiaomi models
The side-scanner fingerprints in the Redmi Note 10 are capacitive and integrated into the power button, inferior in speed and accuracy to flagship ultrasonic sensors (such as the Xiaomi 13 Pro), but superior to optical scanners of budget models.
| Model | Type of scanner | Recognition speed | Working with wet fingers |
|---|---|---|---|
| Redmi Note 10 | Capacitive (side) | 0.3-0.5 sec. | ❌ No. |
| Poco X3 Pro | Capacitive (back) | 0.4-0.6 sec. | ❌ No. |
| Xiaomi 12T | Optical (under the screen) | 0.2-0.4 sec. | ✅ Yes (limitedly) |
| Xiaomi 13 Ultra | Ultrasonic (under the screen) | 0.1-0.3 sec | ✅ Yes. |
As you can see from the table, the Redmi Note 10 offers a balanced solution: the scanner is reliable, but does not support advanced features like wet finger recognition. If you are critical to unlock speed, consider models with ultrasonic sensors (for example, Xiaomi 13 or 14 series).
Alternative methods of unlocking
While fingerprint scanners are the most convenient way to unlock, there are other options in the Redmi Note 10 that should be configured in case the sensor fails or you are temporarily unable to use your finger (for example, due to a cut).
- 🔢 PIN-code or pattern lock: required for backup access. Set up complex code (at least 6 digits).
- 👤 Facial recognition: works through the front camera. Set up in Settings → Passwords and security → Facial recognition: less accurate than scanner, but convenient for everyday use.
- 🔑 Smart Lock: Automatically unlock in trusted locations (home, work) or when connected to a trusted device (e.g., Mi Band smartwatch). → Passwords and security → Smart Lock.
For maximum security, we recommend combining the fingerprint scanner with PIN-For example, you can set up the fingerprint unlocking during the day and switch to the PIN-This will protect your phone if it is stolen while you sleep.
💡
A fingerprint scanner is the safest method of unlocking, but it's not the only one. Always set up backup options (PIN, facial recognition) to keep your phone in an emergency.