How to check the bracelet Xiaomi for performance: the full guide 2026

Xiaomi Mi Band fitness bracelets have become an integral part of the daily lives of millions of users, but even the most reliable technology can fail. If your bracelet suddenly stops syncing, counts steps wrong or discharges quickly, this is a signal for diagnosis. In this article, we will discuss 5 key methods of checking that will help to identify problems at an early stage and avoid costly repairs.

From sensor testing to software analysis, each step is important, such as the Mi Band 6 series bracelets that have built-in self-diagnosis, which is not available in older models, and we will also look at how to distinguish hardware from software failure, and what to do if the bracelet does not respond to charging or is not detected in the Mi Fitness app (formerly Mi Fit).

1. Visual examination and physical condition check

Start by looking at the device externally, and even small cracks in the case or charging contacts can cause unstable operation.

• 🔍 Bracelet body: Check for chips, dents, or traces of moisture (especially if the model does not have official protection) IP68).
• 🔌 Charging contacts: oxidation or contamination of metal sites often leads to power problems.
• 💍 Band: tears or deformation can affect the density of the sensors to the wrist, distorting the readings.

If the bracelet falls or comes into contact with water, there is a high probability of internal damage, for example, in models Mi Band 5 and older charging contacts are located on the back of the case, they are easy to damage if the cable is not sloppy.

⚠️ Warning: If you see signs of corrosion (green or white), do not connect the bracelet to charging - this may cause a short circuit.

Testing of sensors: pulse, pedometer, accelerometer

Sensors are the heart of a fitness bracelet, and their malfunctioning results in false data about physical activity or heart rate, and you can check them both through the app and manually.

1. Frequency meter (pulse): Run the pulse measurement in the Mi Fitness app. Compare the readings with data from another device (for example, a smartphone with PPG function or tonometer). A difference of more than ± 10 beats / min indicates a malfunction.
2. Stepper: Walk exactly 50 steps with your phone in your hand (for control). If the bracelet shows a deviation greater than ±5 steps, you need to calibrate or replace the accelerometer.
3. SpO₂ (oxygen saturation: Available in Mi Band 5 and later, normal values are 95-100%, readings below 90% in well-being indicate a sensor failure.

For the Mi Band 7/8 models, a hidden sensor test is available.

1. Open the Mi Fitness app.


2. Go to Profile → Device Settings → Laboratory.




3.Tap the Sensor Test 5 times in a row.

Compare your pulse with another device|Check the pedometer at 50 steps.|Measure. SpO₂ calmly|Test your reaction to movements (shake your bracelet)

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3. Battery and charging diagnostics

Fast discharge or no response to charging are frequent complaints from users to identify the problem:

To check the actual state of the battery:

1. Charge the bracelet to 100%.
2. Turn off all notifications and synchronization.
3. Set the discharge time to 0%, and the new models are normal for 10 to 14 days on standby.

⚠️ Warning: If the bracelet heats up while charging, immediately turn it off.This is a sign of a malfunction of the power controller or battery!

4.Chronization check with the Mi Fitness app

If the bracelet is not synchronized with the smartphone, the problem may lie in:

• 📱 Bluetooth Settings: Make sure your phone is enabled with Bluetooth 4.0+ and allowed to connect to Mi Fitness.
• 🔄 Application versions: Older software often conflicts with newer wristbands. Update Mi Fitness via Google Play or App Store.
• 🚫 Conflicts with other devices: If the bracelet was previously paired with another phone, reset via Settings → Untie the device.

For forced synchronization:

1. Close the Mi Fitness app (remove from the background).


2.Reset the bracelet (press and hold the touch button for 10 seconds).




3. Open Mi Fitness and wait for the automatic connection.

If the bracelet is detected but the data is not updated, try:

• 📲 Remove the app cache (phone settings) → Annexes → Mi Fitness → Memory. → Clear the cache).
• 🔗 Reconnect the bracelet (forget the device in Bluetooth settings and hide again).

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If the bracelet connects but doesn’t show notifications, check the permissions for Mi Fitness in your phone settings. Android requires access to Notifications and Auto Run.

5. Software testing and resetting

Firmware failures can manifest as freezes, spontaneous reboots or sensor errors. You can check the relevance of the software in the application:

1. Open Mi Fitness → Profile → Device settings → Firmware update.
2. If a new version is available, install it. Don't interrupt the process, it can lead to the bracelet becoming "brickled".

If the update doesn’t help, do a hard reset:

1. Connect the bracelet to the charger.


2 Press and hold the touch button for 20 to 30 seconds until the Mi logo appears.




3. Release the button - the bracelet will be dropped to the factory settings.

⚠️ Warning: Reset removes all data from the bracelet, including alarm settings and activity history!

Recovery mode is available for Mi Band 7/8 models.

1. Completely discharge the bracelet.


2. Connect to charging and immediately press the button 3 times in a row.




3. The menu will appear on the screen with options Reboot and Factory Reset.

💡

If the bracelet doesn't turn on after reset, it indicates a hardware malfunction, and 90 percent of the time, the power controller or battery is to blame.

6. waterproofing (for models with IP68)

Xiaomi Mi Band bracelets since version 4 have IP68 protection, but that doesn't mean they can be used underwater indefinitely.

• 💦 Splash test: Hold the bracelet under a weak flow of water (for example, from the tap) for 1-2 minutes. If after that the screen is running and the contacts are dry, protection is fine.
• 🏊 Immersion: For Mi Band models 5/6/7/8 submersion 1.5 m 30 After the test, wipe the bracelet with a dry cloth and check the sensor response.

❌ What can't be done:

• Swim in chlorinated or salt water (accelerates corrosion).
• Press the button under water (violates tightness).
• Use the bracelet in the sauna or under a hot shower (the steam penetrates inside).

If the bracelet stopped responding to the touch after contact with water, it probably got under the screen.

1. Place the device in a silica gel bag (out of a shoe box) for 24 hours.
2. Do not try to dry with a hair dryer - this will damage the battery.
3. If the problem remains, contact the service.

FAQ: Frequent questions about checking Xiaomi bracelets