Connecting Xiaomi Mi Band 4 to Xiaomi phone: full instruction with error solutions

The Xiaomi Mi Band 4 fitness bracelet remains one of the most popular wearables due to its combination of functionality, sensor accuracy and affordable price. However, many users face difficulties when connecting a gadget to a smartphone for the first time – especially if both devices are from Xiaomi. In this article, we will discuss not only the standard synchronization procedure through the Mi Fit application, but also the nuances that arise when working with the Xiaomi ecosystem (including MIUI features, resolutions and background activity).

It’s important to understand that the Mi Band 4 supports connectivity via both Bluetooth Low Energy (BLE) and Xiaomi’s proprietary protocol, which sometimes leads to conflicts with other devices of the brand. If you’ve used Mi Band 3 or Mi Band 5 bracelets before, the process may seem familiar, but the Mi Band 4 has its own pitfalls – for example, binding to a Xiaomi account or limiting the number of connected devices.

Preparing Xiaomi Phone for Mi Band 4 Connection

Before you start syncing, make sure your Xiaomi smartphone meets the minimum requirements:

• 📱 Version. MIUI: lower MIUI 10 (recommended for stable operation) MIUI 12+).
• 🔄 System Updates: Check for Up-to-date Patches in Settings → The phone. → Updating the system.
• 📶 Bluetooth: Version 4.2 LE or newer (you can specify the characteristics of the model).
• 🔋 Battery charge: at least 30% on the phone, 50% on the bracelet (to avoid failures when setting up).

Pay special attention to the application permissions. Xiaomi has aggressive battery optimization enabled by default, which can block the background work of the Mi Fit.

1. Go to Settings → Applications → Application Management → Mi Fit.
2. Select Permissions and provide access to Contacts, Notifications, Locations and Phone.
3. Turn on the AutoStart option and turn off Battery Optimization for the app.

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If you have Xiaomi with global firmware, but the region in the settings is “China”, some features of the Mi Band 4 may not be available. Change the region to “Russia” or “Europe” in Settings → Additional → Region.

Installation and configuration of the Mi Fit application

The official Mi Fit app is the only way to fully connect the Mi Band 4 to a smartphone. Download it from Google Play or the App Store (depending on the OS). Xiaomi devices also have a version in the App Store MIUI (the "GetApps" icon), but it may contain outdated data.

After installation:

1. Start Mi Fit and select the language (Russian or English is recommended).
2. Click Sign up or Sign in if you already have a Xiaomi account.
3. Confirm the login via SMS or email (be sure to use a valid address – it will be necessary to restore data).

If you don't have a Xiaomi account, create it directly in the app. Note that one account can be linked to no more than 5 Mi Band devices. If you exceed the limit, you will have to untie one of the old devices.

Update the app to the latest version | Sign in to Xiaomi | Provide all permissions requested | Disable VPN (can block Xiaomi servers) | Make sure your phone is Bluetooth enabled

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Step-by-step instructions for connecting Mi Band 4

When the preparation is completed, start synchronizing:

1. Turn on the Mi Band 4 by clicking the touch button below the screen. The Mi logo will appear on the bracelet.
2. In the Mi Fit app, click Profile → Add Device → Bracelet → Mi Smart Band 4.
3. Follow the instructions on the screen: confirm the pairing on the phone and bracelet (the code will appear on the Mi Band 4 - compare it with the code in the application).
4. Wait until the synchronization is complete (it can take up to 2 minutes).

If the bracelet is not detected, try:

• 🔄 Reboot Mi Band 4 (press the touch button for 10 seconds until vibrations appear).
• 📱 Turn Bluetooth on/off on your phone.
• 🔧 Remove the Mi Fit app cache in your phone settings.

Configure notifications and basic functions

After successfully connecting, customize the Mi Band 4 to your needs. The main settings are available in Profile → Mi Smart Band 4:

For call notifications, check:

1. Permission to access the Call Log in the phone settings.
2. No notification blocking in Settings → Notifications → Additional.

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If notifications do not arrive, make sure that the option Show notifications on the locked screen is enabled in Mi Fit (located in the notification settings of the bracelet).

Solving Typical Connection Problems

Even after successful synchronization, users of Xiaomi Mi Band 4 are faced with errors.

⚠️ Warning: If the bracelet is plugged in but the data is not synchronized (steps, pulse, sleep), check the date and time on the phone. mismatches with Xiaomi servers block data exchange.

Problem 1: Bracelet shuts down in a few minutes

The reason is the battery optimization in MIUI.

1. Go to Settings → Battery and Performance → Battery Consumption Management.
2. Select Applications, find Mi Fit and install Without Limits.

Problem 2: Google Fit sync is not working

For integration with Google Fit:

1. In Mi Fit, go to Profile → Settings → Data Synchronization.
2. Select Google Fit and log in through your Google account.
3. Make sure that the Google Fit settings allow access to Mi Fit.

Problem 3: The bracelet doesn't vibrate when notified

Check it out.

• 🔕 Do not disturb on the bracelet (Settings) → Don't disturb).
• 📳 Vibration level in Profile → Mi Smart Band 4 → Vibration.
• 🔋 Bracelet battery charge (at a level below 10% the vibration is switched off automatically).

Bracelet doesn't find phone | Notifications don't come | Data isn't synced | Fast battery discharge | Other

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Optimizing the battery life of the Mi Band 4

Xiaomi Mi Band 4 when used actively holds a charge of up to 10-14 days, but this indicator depends on the settings.

• 🔋 Turn off the constant pulse (in Profile) → Mi Smart Band 4 → Heartbeat → Measurement frequency: Choose 30 minutes instead of 1 minute).
• 🌙 Reduce the brightness of the screen to 2-3 divisions (in the Screen). → Brightness).
• 🚫 Disable unnecessary notifications (e.g., from social media if they are not critical).
• 🛌 Deactivate raising your hand to activate if you don’t use the feature frequently.

When using the Mi Band 4 NFC firmware (a contactless payment model), the battery runs 15-20% faster due to the additional module. To save charge, turn off the NFC in the bracelet settings if you do not use payments.

Also check the bracelet firmware version. Updates often optimize power consumption to check whether:

1. In Mi Fit, go to Profile → Mi Smart Band 4 → Firmware Update.
2. If a new version is available, plug the bracelet into charging and wait for the update to complete (don’t turn it off the power!).

Additional features: music, alarm clocks, training

Mi Band 4 supports not only basic features, but also advanced options that many users miss out on:

• 🎵 Music control: In bracelet settings, enable Player Control to switch tracks directly from Mi Band 4 (works with Mi Music, Spotify, YouTube Music).
• ⏰ Smart alarm clocks: set up sleep phases in Profile → Alarms to wake you up at the best time.
• 🏃 Exercise modes: add the right sports to your Profile → Exercise (e.g. swimming, cycling).
• 🔒 Unlocking the phone: activate in Settings → Unlocking the device (requires setting up a faceprint or PIN-phone-code).

For swimming, the Mi Band 4 has a waterproof 5 ATM, but before diving:

⚠️ Warning: Do not press the touch button of the bracelet under water - this can lead to moisture entering the enclosure. Also avoid hot springs (saunas, baths) - maximum operating temperature 45°C.

FAQ: Frequent questions about Mi Band 4 and Xiaomi