Xiaomi Mi Band 4
Xiaomi
synchronization
Mi Band 4
Android
What's next? We're not just going to list the steps in the official manual, we're going to talk about the hidden nuances of why the bracelet might not be Bluetooth-detected, how to update the firmware correctly before you connect, and what to do if Mi Fit (or its Zepp Life alternative) gives you an error, and you're going to learn what permissions to give the app to get your health notifications and data displayed correctly. Let's start with preparation!
1. Preparation of the bracelet and phone before connection
Before syncing the Mi Band 4 with your phone, make sure both devices are ready for the process. Often problems arise from trifles: a discharged bracelet battery, outdated firmware or conflicts with other gadgets.
Check the bracelet first. The Mi Band 4 should have at least 20% charge, otherwise the connection process may be interrupted. If the indicator on the bracelet screen flashes red, plug it into the charger for 10-15 minutes. Use the original cable or certified analogue: cheap charging can damage the contacts.
Make sure that on your phone:
- π± Android 5.0 or later (for stable operation Mi Fit or Zepp Life).
- π Bluetooth is on and in detection mode (not energy saving mode!).
- πΆ Internet connection (Wi-Fi or mobile network) for downloading applications and updates.
- π« No active VPN Firewalls that block connection to Xiaomi servers.
Important point: if you have previously used another fitness bracelet (such as the Honor Band or Huawei Band), remove it from the list of associated devices in the Bluetooth settings.
2. Installation and configuration of the Mi Fit or Zepp Life app
The official Mi Band 4 app is Mi Fit, but since 2022 Xiaomi has been actively moving users to Zepp Life (formerly Amazfit), both apps are compatible with the bracelet, but there are differences:
| Function | Mi Fit | Zepp Life |
|---|---|---|
| Interface. | Simple but outdated | Modern, with animations |
| Synchronization of data | Slow down, sometimes paws | Faster, more stable. |
| Notifications | Basic settings | Flexible customization |
| Support for third-party services | Google Fit, Apple Health | Google Fit, Strava, MyFitnessPal |
We recommend installing Zepp Life if your phone supports Android 7.0+. Download it from Google Play or the official Xiaomi website (if you don't have access to the Play Market:
- Open the app and select the language (Russian is available).
- Sign up via phone number, email or Xiaomi/Google account.
- In the Profile menu β Settings β Devices press Add Device Add Device.
- Choose a bracelet. β Mi Smart Band 4.
The critical detail: if you use two phones (e.g., a work phone and a personal phone), tie the bracelet to only one device, and connecting to two smartphones at the same time will cause synchronization failures.
βοΈ Preparation for connection
3. Step-by-step instructions for pairing the bracelet with the phone
Now, to the process of connection, follow the instructions carefully, because even one step can be missed, and you can make the "Disconnected" error.
1. activation of Bluetooth on the phone:
- π΅ Open the Settings. β Connections β Bluetooth.
- π Make sure that the βVisibility for Allβ mode is on (for 2-3 minutes).
- π« Disable other devices (earphones, smartwatches) if they are connected.
2. Search for the bracelet in the annex:
- π± In Zepp Life, click Add Device β Mi Smart Band 4.
- π Wait for the app to find the bracelet (can take up to 30 seconds).
- π On the screen of the bracelet will appear 4-digit code β confirm it in the application.
Configure the main parameters:
- β± Select a time zone (should match the phone).
- π Specify height, weight, sex and age for correct calorie counting.
- π Allow access to notifications, contacts and geolocation (required!).
If the bracelet is not present, try:
- π Reboot Mi Band 4 (press the touch button for 10 seconds).
- π± Restart Bluetooth on your phone.
- π Clear the Zepp Life app cache in your phone settings.
π‘
If the bracelet still doesn't connect, try using another phone (like a friend's) to set up the bracelet first, and sometimes the problem lies in the firmware of a particular smartphone model.
4. Notification setting and data synchronization
After a successful connection, itβs time to customize the bracelet to suit your needs, starting with notifications, one of the most popular features of the Mi Band 4.
Including notifications from annexes:
- π± Open Zepp Life. β Profile β Mi Smart Band 4 β Notifications.
- π Turn on the "Notifications from the phone" switch".
- π Select the apps you want to see on your bracelet (e.g. WhatsApp, Telegram, Gmail).
Version and display settings:
- π In the same menu, adjust the vibration intensity (from weak to strong).
- π΅ Turn on the "Do Not Disturb" option for sleep or important appointments.
3. Synchronization of health data:
- π©Ί In the Health section, activate monitoring of heart rate and blood oxygen levels.
- π Set up automatic sleep tracking (recommended to enable Sensitive Mode for accurate data).
Important: For proper notifications, give the Zepp Life app the following permissions in your phone settings:
- π² Access to notifications (in Special Permits).
- π Geolocation (for accurate tracking of activity).
- π Auto-run (to make the application run in the background).
Why do notifications come with a delay?
5. Mi Band 4 firmware update: when and how to do it
The firmware of the bracelet affects the stability of operation, the accuracy of sensors and compatibility with new versions of applications. Xiaomi regularly releases updates for the Mi Band 4, but they are not always installed automatically.
How to check the firmware version:
- Open Zepp Life. β Profile β Mi Smart Band 4 β About the device.
- Look up the line "Firmware Version." Current for 2026 is 1.0.9.54 or higher.
How to update firmware:
- Connect the bracelet to the charge (the charge should be) >50%).
- In the app, go to About Device β Firmware update.
- If a new version is available, click Update and wait until it is completed (donβt turn off Bluetooth!).
β οΈ Warning: If the bracelet disconnects from the phone or runs out during the upgrade, it may stop turning on. In this case, you will need to reset to factory settings (press the button for 20 seconds).
After the update:
- π Reset the bracelet (press the button for 10 seconds).
- π± Reconnect it in the app (sometimes re-synchronization is required).
π‘
Update your firmware only when the Internet connection is stable and the bracelet is above 50%, interrupting the process can lead to the "bricking" of the device.
6. Solving typical connection problems
Even if you follow the instructions accurately, you can have errors, and let's look at the most common ones and how to fix them.
| Problem. | Possible cause | Decision |
|---|---|---|
| The bracelet is not on Bluetooth. | Conflict with other devices or outdated phone firmware | Disable other gadgets, update Android, reboot your phone |
| The "failed to connect" error | Incorrect time or region settings on your phone | Set automatic date/time determination in the settings |
| The bracelet is connected but does not show notifications | No permits for Zepp Life | Check the permissions in Android settings (see section 4) |
| Steps or sleep data are not synchronized | Sensor failure or weak Bluetooth signal | Reconnect the bracelet, update the firmware, reset the data in the application |
If none of these methods worked, try:
- Remove the bracelet from the application and add it again.
- Reset the Mi Band 4 to factory settings (click the button 20 seconds before the Xiaomi logo appears).
- Reinstall the Zepp Life or Mi Fit app.
β οΈ Note: if you use custom firmware on your phone (such as LineageOS or MIUI Global with modifications, some of the bracelet functions may not work properly. In this case, try connecting via another phone with standard firmware.
7. Alternative apps for Mi Band 4: is it worth trying?
The official Mi Fit and Zepp Life apps arenβt the only options for working with Mi Band 4. There are third-party programs that offer advanced features, but also have drawbacks.
Popular alternatives:
- π Notify & Fitness for Mi Band β supports screen customization, additional widgets and advanced notifications.
- π§ Mi Band Master allows you to customize vibrations, fonts and even set third-party dials.
- π Tools & Mi Band β focuses on health analytics (sleep chart, pulse.
Warning: Third-party applications may:
- π Require more permissions than official ones (risk of data leakage).
- π Faster discharge the battery of the bracelet due to background activity.
- π« Stop supporting older models (e.g. Mi Band 4).
If you decide to try an alternative, first:
- Make a backup of the data in Zepp Life.
- Disable the bracelet from the official application.
- Install the new software and follow its connection instructions.
8 Tips for extending the life of the Mi Band 4 battery
One of the key advantages of the Mi Band 4 is long battery life (up to 20 days with moderate use). However, some adjustments can significantly reduce this time.
What to turn off to save charge:
- π©Ή Continuous heart rate monitoring β turn on only for exercise.
- π Automatic sleep tracking β if you donβt need detailed analysis, turn off.
- π Vibration for all notifications β leave only for important (calls, SMS).
- πΆ Continuous phone connection β if you donβt use notifications, manually disable Bluetooth.
What to include for accuracy (but with a reasonable balance):
- π Activity recognition (walking, running) β minimum battery consumption with great benefit.
- π‘ Screen weather β updated once an hour, does not affect autonomy.
Useful Lifehack: If the bracelet discharges too quickly (less than 5 days), try:
- Reset it to factory settings.
- Update the firmware to the latest version.
- Change the strap - sometimes the contacts are oxidized from sweat.
π‘
The optimal balance for the Mi Band 4 is to turn off continuous heart rate monitoring, but leave automatic foot and sleep tracking, which will extend the work to 15-18 days without recharging.