Connecting Xiaomi Mi Band 4 to a smartphone: full instructions with pictures and tips

The Xiaomi Mi Band 4 fitness bracelet remains one of the most popular gadgets for tracking activity even years after its release. AMOLED-The screen, which in 2026 still competes with the newest products of the budget segment, but many users face difficulties when connecting for the first time: the bracelet is not on the list of devices, the application gives errors, and the instruction in Chinese only adds to the confusion.

In this article, you’ll find a step-by-step guide to everything from choosing the right version of the Mi Fit app (or Zepp Life) to solving typical Bluetooth problems. We’ll also look at how to reset the bracelet to factory settings if it was previously tied to another smartphone, and what to do if the Mi Band 4 refuses to sync after a firmware update.

We’ll pay special attention to compatibility: the bracelet works with Android 5.0+ and iOS 10.0+, but there may be bugs on older versions of the OS. If your phone is released before 2017, check the list of supported devices at the end of the article.

1.Preparation for connection: what to do before synchronization

Before you start connecting, make sure your Mi Band 4 is at least 20% charged. When the battery is low, the bracelet may shut down during synchronization, which will cause a failure. To check the charge, click on the touch button below the screen, the battery indicator will appear on the display.

It is also important to update your smartphone operating system to the latest version. On Android, you can do this from the Settings menu → System → System Update, on iPhone – in Settings → Main → Software Update. Outdated versions of the OS often conflict with the latest updates to the Mi Fit app.

If the bracelet has already been used, it must be unconnected from the previous account.

1. Press the touch button on the Mi Band 4 for 10 seconds until vibrations appear.
2. The screen will display the inscription Reset – confirm the reset by touching the button again.

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If the bracelet does not respond to prolonged pressing, plug it into charging and try again.Reset only works at a charge level above 5%.

The final step is to enable Bluetooth and geolocation on your smartphone. Without these features, the app will not be able to detect the bracelet. Android will also need to allow Mi Fit to access notifications and contacts (this is necessary to display incoming calls on the bracelet screen).

2. Install and configure the Mi Fit (or Zepp Life) application

The official Mi Band 4 management app is called Mi Fit, but since 2022 Xiaomi has been actively moving users to a new platform, Zepp Life. Both apps are compatible with the bracelet, but Zepp Life offers a more modern interface and additional sleep analysis features.

Download the application from official sources:

• 📱 Android: Mi Fit in Google Play or Zepp Life
• 🍎 iOS: Mi Fit in App Store or Zepp Life

Once installed, launch the app and register for a Xiaomi account (or log in through an existing one). If you already have a Mi Account, use it – this will make it easier to sync data between devices.

Please note that when registering, please indicate your real region of residence. If you choose China, some features (such as bracelet payment) may not be available in Russia and the CIS.

Download the official version from Google Play/App Store

Register or log into a Xiaomi account

Allow Bluetooth access and notifications

Enable geolocation to accurately track activity

Update the application to the latest version-->

Step-by-step: how to connect Mi Band 4 to the phone

Now, to the synchronization process itself, follow the instructions carefully, and skipping any step can cause a connection error.

Step 1. Open the Mi Fit or Zepp Life app and click on the profile icon in the top right corner. Then select Add Device.

Step 2. In the list of available gadgets, find the Mi Smart Band 4 and tap it. If the bracelet does not appear, make sure it is next to the smartphone (no more than 1 meter) and on (the screen should have time or the Mi logo on).

Step 3: A 6-digit confirmation code will appear on the bracelet screen, enter it into the app on your phone. If the code doesn't appear, tap the touch button on the bracelet 2-3 times.

Step 4. Wait until sync is complete. It can take up to 2 minutes -- don't close the app or turn off Bluetooth. Once you've successfully connected, the current time will be displayed on the bracelet screen, and the main control panel will appear in the app.

If you fail to connect at this stage, try the following steps:

• 🔄 Reboot your smartphone and bracelet.
• 📱 Remove Mi Band 4 from the list of Bluetooth devices in your phone settings and try again.
• 🔧 In Bluetooth settings, turn off Power Saving mode (on some phones, it interferes with stable connection).

4.Configure the main functions after connection

After successful synchronization, we recommend you to immediately adjust the key parameters of the bracelet to avoid problems in the future.

1. Firmware update.

Go to Device Profile → Settings → Firmware Update. If a new version is available, install it. Updating through the app is safer than manually through firmware files from third-party sites. During the process, do not disconnect the bracelet from your phone or close the Mi Fit.

2. Notifications.

To receive alerts about calls and messages:

1. In the app, select Device Profile → Notifications.
2. Activate the Incoming Calls Switch.
3. For messages (SMS, WhatsApp, Telegram) click Notification Management and select the desired applications.

3. Time mapping.

If the bracelet screen has the wrong time or date, sync them manually:

1. Open the Device Profile → Additional → Time and Date.
2. Activate the autosynchronization option.
3. If time is still going down, set the time zone manually.

Typical problems and their solutions

Even after a successful connection, Mi Band 4 users often encounter bugs, and let’s look at the most common ones and how to fix them.

Problem 1: The bracelet doesn’t vibrate when notified.

Causes and solutions:

• 📵 Bluetooth is off – check the connection in the notification curtain.
• 🔕 Do Not Disturb Mode – Turn it off in bracelet settings (Profile) → Don't disturb).
• 📱 Battery Limits – on Android, add Mi Fit to the optimization exception list (Settings) → Battery → Optimizing the battery).

Problem 2: The data is not synchronized with the application.

What to do:

1. Reset the bracelet (press the button for 5 seconds).
2. In the Mi Fit app, select Device Profile → Sync data.
3. If it doesn’t work, remove the bracelet from the app and plug it back in.

Problem 3: The bracelet is rapidly discharged.

Possible causes:

• 🔋 Constant synchronization – Turn off automatic synchronization in the background.
• 🌡️ Frequent pulse measurement – set the 30 minutes interval in the settings (Profile) → Heart → Frequency of measurements).
• 📶 Weak Bluetooth signal – Keep your phone and bracelet no more than 10 meters away.

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If the bracelet discharges in 1-2 days, check the physical condition of the battery. Bloating or leakage of the battery requires replacement (contact the service center).

⚠️ Warning: If the bracelet stops turning on after the firmware update (black screen, no vibration), plug it into charging for 30 minutes. 90% of the time, this solves the problem of "mild" failure. Don't try to disassemble the bracelet yourself - this voids the warranty.

6.How to reset Mi Band 4 to factory settings

Resetting the bracelet to factory settings may be required in several cases:

• You sell or transfer the bracelet to another person.
• The bracelet is unstable (frequent freezes, synchronization errors).
• You forgot the screen unlock password (if it was set).

Method 1: Through the bracelet menu.

1. Swipe your finger up the bracelet screen to open the menu.
2. Find the Settings (cog icon) and select it.
3. Scroll down to Reset Settings and confirm the action.

Method 2: Hardware reset.

If the bracelet does not respond to touch:

1. Connect the bracelet to the charger.
2. Press the touch button for 10-15 seconds until you feel the vibration.
3. On the screen will appear the inscription Reset – confirm the reset by touching the button again.

Once reset, the bracelet will automatically reset and can now be connected to a new phone as described in Section 3.

⚠️ Warning: Reset removes all data from the bracelet, including activity history and alarm settings. If you sync the data with the Mi Fit app, it will be stored in the cloud and restored after reconnecting.

7. compatibility of Mi Band 4 with different smartphones

The Xiaomi Mi Band 4 officially supports most modern smartphones, but some models may have problems. Below is a table of compatibility with popular brands.

If your smartphone is not on this list, check it for minimum requirements:

• 📱 Android 5.0 or newer / iOS 10.0 or newer.
• 📶 Support for Bluetooth 4.0 (LE).
• 🔋 At least 1 GB of RAM.

For Huawei owners without Google services, we recommend using the Notify & Fitness for Mi Band alternative app (available in AppGallery), which supports basic Mi Band 4 features, but without syncing with the Xiaomi cloud.

FAQ: Frequent questions about Mi Band 4