Connecting Xiaomi Mi Band 4 to Samsung Galaxy A51: full instruction with solutions to typical errors

Introduction: Device compatibility and preparation

The Xiaomi Mi Band 4 fitness bracelet remains a popular choice among users due to its combination of functionality and affordable price. However, owners of Samsung Galaxy A51 smartphones often face questions about the correct synchronization of these devices. Unlike Xiaomi phones, where integration with the Mi Fit ecosystem takes place out of the box, Samsung needs to follow a few additional steps.

The main problem lies in the differences in operating systems: Mi Band 4 is optimized to work with MIUI (Xiaomi firmware), while the Galaxy A51 runs on One UI (Samsung’s shell over Android).This leads to nuances in permission settings, notification management and even the stability of Bluetooth connection. In this article, we will discuss not only basic connectivity, but also unique solutions for eliminating synchronization freezes that occur when paired using the Mi Band 4 and Galaxy A51.

Before proceeding, make sure that:

• 📱 Your Samsung Galaxy A51 It runs on Android 10 or later (check Settings). → The phone. → Android version).
• 🔋 The charge level of the bracelet exceeds 20% (at a low charge, failures during pairing are possible).
• 📲 The phone has the official Mi Fit or Zepp Life app installed (since 2022, Xiaomi has switched to Zepp for new devices, but the Mi Band 4 is supported in both devices).

Step 1: Installation and configuration of the application

The first step is to select and install software. It is important to consider that Mi Fit and Zepp Life have different interfaces and features, but both are compatible with Mi Band 4. For the Galaxy A51, it is recommended to use Zepp Life, since this application is optimized to work with the latest versions of Android and less often emits errors when syncing.

Download the application from the official store:

• 📥 Zepp Life – Google Play link.
• 📥 Mi Fit – Alternative link (if Zepp Life is not suitable).

After installation:

1. Open the app and select the language (Russian is available in both).
2. Register a Xiaomi account or sign in through an existing one (you can use Google, Facebook or phone number).
3. In the add-on menu, select the Bracelet → Mi Smart Band 4.

Turn Bluetooth on to Samsung A51|Install Zepp Life or Mi Fit|Registering a Xiaomi account|Charge the Mi Band 4 to 50%+-->

⚠️ Note: If you register for a Xiaomi account with a “failed to connect to the server” error, check the date and time settings on your phone. Automatic time synchronization should be enabled (Settings) → General. → Date and time → Automobile).

Step 2: Connecting the bracelet to your phone via Bluetooth

The most critical stage is the direct connection of devices. Here, users of the Galaxy A51 often face a problem when the bracelet "cannot see" the phone or vice versa. The reason usually lies in the conflict of Bluetooth versions: the Mi Band 4 uses Bluetooth 5.0, and the Samsung A51 supports Bluetooth 5.1.

To avoid mistakes:

1. Activate Bluetooth on your phone (Settings → Connections → Bluetooth).
2. In the Zepp Life app, click Add Device → Mi Smart Band 4.
3. On the bracelet, press the touch button to unlock the screen, and confirm the pairing (the code will appear on the screen that must match the code in the application).
4. Wait until the synchronization is complete (it can take up to 2 minutes).

If the bracelet is not defined:

• 🔄 Reboot the Mi Band 4 (press the touch button for 10 seconds until the vibration appears).
• 📵 Turn off and turn on Bluetooth on your phone again.
• 🚫 Remove the bracelet from the list of associated devices (Bluetooth Settings) → Mi Band 4 → Forget) and reconnect.

Step 3: Set up notifications and permissions

Once the connection is successful, you need to set up notifications, otherwise you won’t receive call and message alerts.On the Samsung Galaxy A51, this requires additional manipulation due to the One UI policy, which by default limits the background activity of apps.

Instructions for setting:

1. Open Settings → Applications → Zepp Life (or Mi Fit).
2. Select Notifications and turn on the Allow Notifications switch.
3. In the Permits section, provide access to: 📞 Contacts (to display the names of callers). 📁 Storage (for backup copies of data). 📍 Location (for accurate tracking of jogging). 🔋 Battery Optimization (Disable Optimization for Zepp Life).

Zepp Life

Profile → Mi Band 4 → Notifications

Calls.

SMS

Annexes

WhatsApp

Telegram

💡

If notifications are duplicated (come to both phone and bracelet), disable duplication in Zepp Life settings: Notifications → Additional → Disable duplication

The Galaxy A51 feature: to correctly work notifications, you need to manually add Zepp Life to the list of non-optimized applications:

1. Go to Settings → Device Care → Battery → Battery Settings.
2. Select Applications that work in the background.
3. Find Zepp Life and enable the Allow Background Activity option.

⚠️ Note: If you update the One UI If you're on your phone, the bracelet stopped working properly, try rolling back the Zepp Life app to the previous one. APK from APKCombo (select version from 2 to 3 months ago) and install manually.

Step 6: Additional features and hidden capabilities

The Mi Band 4 supports a number of features that Samsung users don’t always see.

1. Music management

The bracelet can switch tracks on the phone.

1. Turn on the player on your phone (like Spotify or YouTube Music).
2. On the bracelet, swipe right across the screen to open the music control menu.
3. Use the buttons. ▶/⏸ and ⏭/⏮ play-control.

2. Quick access to functions

Set up short gestures for convenience:

• 🔄 Raising your hand to turn on the screen: Bracelet settings → Display. → Lifting for activation.
• 🔒 Locking the screen when removing: Bracelet settings → Security → Locking when removed.

3. Hidden dials

Mi Band 4 supports informal dials that can be installed through third-party apps, such as Notify & Fitness for Mi Band.

1. Download the app from Google Play.
2. Connect the bracelet through this application and select the dial you like.
3. Synchronize the changes with the bracelet.

💡

To install unofficial dials, you may need to disable Malware Protection in Zepp Life (Settings → Security → Protection from Malware → Off).

FAQ: Frequent questions about connecting Mi Band 4 Samsung A51