Sync Xiaomi Mi Band 4 with phone: full instruction from connection to error solving

Fitness bracelet Xiaomi Mi Band 4 It remains one of the most popular trackers even years after its release, thanks to a combination of functionality, sensor accuracy and affordable price. However, many users face difficulties in first syncing a device with a smartphone. 7 Smart Band 8), The fourth version requires a more careful approach to configuration due to the features of firmware and compatibility with modern versions. Android/iOS.

In this article, we will not only examine the basic connection through official applications (Mi Fit and Zepp Life), but also the nuances that the manufacturer does not keep silent: from linking a Xiaomi account to manually updating the firmware for synchronization errors. Particular attention will be paid to solving typical problems - when the bracelet is not detected by the phone, constantly breaks the connection or does not display notifications. All instructions are relevant for 2026 and take into account the latest changes in the work of Xiaomi services.

Which phones are compatible with Mi Band 4?

Before connecting, it’s important to make sure your smartphone meets the minimum requirements.The Mi Band 4 officially supports:

• 📱 Android: 5.0 and higher, but 7.0 is recommended+ For stable operation. On Android 12 devices+ You may have problems with background access – you will need to manually adjust the permissions.
• 🍎 iOS: iPhone with iOS version 10.0 and later. For iOS 16 users+ It is important to enable Bluetooth access in your privacy settings.
• 🔄 Bluetooth: 4.0 or higher (all modern smartphones of the last 8 years meet this requirement).

Unofficially, the bracelet can work on older versions of the OS, but in this case, it is not guaranteed to correctly synchronize data about sleep, pulse and notifications. For example, on Android 6.0, the Mi Fit application may not update the firmware of the bracelet, and on iOS 9 it may not display activity schedules.

⚠️ If your phone is released before 2016, check Bluetooth Low Energy support (BLE) — Without it, the bracelet will be unstable. The list of incompatible models includes the Samsung Galaxy. S3, HTC One M7 and other obsolete devices.

Preparing for synchronization: what to do before connecting

To avoid errors when you first connect, follow a few preliminary steps:

1. Charging the bracelet. Make sure that the Mi Band 4 is at least 50% charged. At a charge level below 20%, synchronization may be interrupted. Charging takes about 1.5-2 hours (the indicator on the bracelet screen will show 100%).
2. Install the application. Download the official application: 🤖 For Android: Mi Fit or Zepp Life (new name for international version). 🍏 For iOS: Mi Fit in the App Store.

Account registration.

Xiaomi

Zepp

account.xiaomi.com

Important point: if you have previously used a different brand bracelet (such as the Huawei Band or Honor Band), uninstall their apps – they may conflict with Mi Fit via Bluetooth.

Charge the Mi Band 4 to 50%+

Install Mi Fit or Zepp Life

Registering a Xiaomi/Zepp account

Remove the apps of other fitness trackers

Enable Bluetooth and geolocation on your phone-->

How to connect Mi Band 4 to your phone

The synchronization process takes no more than 5 minutes, if you follow the algorithm:

1. Activate Bluetooth. Turn on Bluetooth on your phone and make sure that Visibility for All mode is turned off (it is not necessary for connecting).
2. Open Mi Fit or Zepp Life and click Add Device (the button is usually located in the upper right corner).
3. Select a model. Select "Mi Smart Band 4" from the device list. If the model is not listed, update the app or check the account region (should match the region of the bracelet purchase).
4. Pair. Press the bracelet screen to unlock it, and confirm the connection in the app. The confirmation code (if requested) is usually 0000 or 1234.
5. Update the firmware. Once connected, the app will prompt you to update the bracelet firmware — agree, otherwise some features (such as notifications or sleep monitoring) may not work properly.

Mi Band 4

Mi Band 5/6

Mi Band 7 or newer

Another fitness bracelet

I haven't bought it yet.-->

Configure notifications and basic functions

After successful synchronization, we will configure the key parameters:

1. Notifications of calls and messages

To make the bracelet vibrate when incoming calls or SMS:

1. In Mi Fit, go to Profile → Mi Smart Band 4 → Notifications.
2. Turn on the "Call Notifications" and "Notifications from Applications" switch.
3. Select the apps you want to see on your bracelet (e.g. WhatsApp, Telegram, Viber).

2. Monitoring of sleep and heart rate

For accurate tracking:

• 🛌 Enable "Sleep Monitor" in the bracelet settings (default works from 22:00 to 8:00).
• ❤️ Activate Continuous Heart rate Monitoring (discharges the battery faster, but gives more complete data).
• 📊 In the "Sleep" section of the application, you can set the alarm clock with a smart awakening (the bracelet will wake you up in the light sleep phase).

3. Screen personalization

Mi Band 4 supports interchangeable dials to set a new one:

1. In the app, go to Profile → Mi Smart Band 4 → Dials.
2. Choose your favorite design from the collection (there are animated options).
3. Click on "Sync" to apply the changes.

⚠️ Note: If the bracelet does not vibrate when calling after setting notifications, check: 🔕 Is the Do Not Disturb mode on the bracelet enabled (check down on the Mi Band 4 screen by swipeing down). 📵 Mi Fit Permissions in Phone Settings: The App Needs Access to Notifications, Contacts and Phone.

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If the bracelet does not show notifications from messengers, try manually adding the application in the settings of Special features → Notification services on Android.

Firmware Update: Why It Matters and How to Do It

The Mi Band 4 firmware affects the stability, accuracy of sensors and compatibility with new versions of applications. If the bracelet is buggy (for example, it miscalculates steps or does not synchronize data), the first thing to do is to update the software.

How to check the firmware version:

1. Open Mi Fit and go to Profile → Mi Smart Band 4 → About the device.
2. Find the line "Firmware Version." The current version for 2026 is 1.0.9.54 or higher.

How to update firmware:

• 🔄 If the application has an “Update” button, press it and wait for completion (the bracelet will reboot automatically).
• 📥 If the update does not come, download the latest firmware version from the AmazonMi website and install it manually through Mi Fit (Section "Manual Update").
• 🔋 Make sure the bracelet is at least 60% charged – it may fail when discharged during the upgrade.

⚠️ Warning: If the bracelet stops turning on or freezes on the logo after the upgrade, reset: Connect the bracelet to charging. Press the touch button for 20 seconds until the vibration appears. Disconnect and reconnect via Mi Fit.

Solving Typical Synchronization Problems

Even after setting up correctly, users encounter errors.

1.The bracelet does not connect to the phone

Possible causes and solutions:

• 📱 Bluetooth does not work: Reboot the Bluetooth module (in the phone settings, turn it off and turn it on again).
• 🔋 Bracelet discharged: Charge it to 100% - at a level below 15%, the connection may break.
• 🌍 Region Disparity: In Mi Fit, go to Profile → Settings → Region and select "Russia" or "Global".
• 📵 Conflict with other devices: Remove all saved Bluetooth devices in your phone settings and reconnect.

2. data is not synchronized with the application

If steps, sleep, or pulse are not displayed in Mi Fit:

• 🔄 Reset the bracelet (press the button for 10 seconds).
• 📲 In your phone settings, check if Mi Fit is allowed access to Physical Activity and Warehouse.
• 🌐 Enable Mobile Data or Wi-Fi – Internet is required to sync.
• 🔄 In Mi Fit manually click "Sync Data" (circle arrow icon at the top of the screen).

3.The bracelet is switched off during exercise

If the connection is broken when running or swimming:

• 🏃 Make sure your phone has power saving power off for Mi Fit.
• 📶 Check if the phone case is blocking the Bluetooth signal.
• 🔋 If the bracelet battery is below 30%, charge it – when the charge is low, the connection becomes unstable.

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If none of the methods worked, try resetting the bracelet to factory settings: in Mi Fit go to Profile → Mi Smart Band 4 → Untie the device, then add it again.

Alternative applications for Mi Band 4

The official Mi Fit app doesn’t always suit users because of its limited functionality.

Before installing third-party apps, untie the bracelet from Mi Fit, otherwise conflicts may occur, and note that alternative programs may not support the latest versions of Mi Band 4 firmware.

How to switch to an alternative application:

1. In Mi Fit, untie the bracelet (Profile → Mi Smart Band 4 → Untie).
2. Install a new app and follow the instructions to pair the device.
3. Once connected, set up notifications and settings manually.

⚠️ Note: When using informal applications, health data (sleep, pulse) may not be synchronized correctly. For medical purposes, only Mi Fit or Zepp Life are recommended.

FAQ: Frequent questions about synchronization of Mi Band 4