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 activity tracking gadgets even years after its release, with its main advantages being affordable, long battery life and a wide range of functionality from sleep monitoring to smartphone notifications. However, many users have difficulties already at the stage of first connecting to the phone, especially if we are talking about not the newest models of smartphones or custom firmware.

In this article, we’ll look at all the ways Mi Band 4 can pair with Android and iOS devices, including solutions to common bugs like “device fails” or “fails to complete setup.” You’ll also learn how to update the bracelet’s firmware correctly before connecting and what settings to change immediately after synchronization for maximum convenience.

Preparation for connection: what to do before pairing

Before you start setting up, make sure your bracelet and phone meet the minimum requirements. Xiaomi Mi Band 4 is compatible with:

• 📱 Android 5.0 and newer (with Bluetooth 4.2 support)
• 🍎 iOS 10.0 and newer (iPhone) 5s higher)
• 🔋 Charged bracelet (minimum 20% battery)
• 📶 A stable Internet connection on your phone (for downloading the application and updates)

If your smartphone is older than 2015, check the Bluetooth version in settings (Settings → About Phone → Bluetooth Version). Bluetooth Low Energy (BLE) support is critical for the Mi Band 4 – without it, pairing will not be possible. Also remove old versions of Mi Fit or Zepp Life apps from your phone if they were installed earlier – they may conflict with the new version of Mi Fitness.

💡

If you have a custom firmware phone (like LineageOS), turn on compatibility mode for Bluetooth devices in the developer before connecting (Settings → For developers → Enable Bluetooth HCI Sniffer).

It's also important to update the firmware of the bracelet itself.

1. Charge the Mi Band 4 to 100%.
2. Install the Mi Fitness app from the official store (links below).
3. At the first start, the application will offer to update the firmware - agree.

Installation and configuration of the Mi Fitness application

The official Xiaomi Mi Band 4 management app is called Mi Fitness (formerly Mi Fit and Zepp Life).

• 🤖 For Android: Google Play
• 🍎 For iOS: App Store

After installation, follow the following steps:

1. Open the app and select the language (Russian is available).
2. Sign up or sign in via your Xiaomi, Google, Facebook or Apple ID account. Without an account, data synchronization will not be possible!
3. Click Add Device and select Mi Smart Band 4 from the list.

Xiaomi/Google account is registered

Installed application Mi Fitness

Bluetooth on your phone

Bracelet charged and on

Removed old versions of Mi Fit/Zepp Life-->

If the app doesn’t find the bracelet, try:

• 🔄 Reboot Bluetooth on your phone (Settings) → Bluetooth → Off/On).
• 📱 Re-launch the Mi Fitness app.
• 🔋 Remove the bracelet from the charger and re-insert (this will reset its connection).

Step-by-step: how to connect Mi Band 4 to Android

The process of pairing with Android smartphones usually goes smoothly, but there are nuances for different versions of the operating system.

1. Activate Bluetooth on your phone and make sure the bracelet is close (no further than 1 meter).
2. In the Mi Fitness app, click Add Device → Bracelet → Mi Smart Band 4.
3. On the screen of the bracelet will appear 6-digit code - confirm it in the application.
4. Wait until the synchronization is complete (it can take up to 2 minutes).
5. Update the bracelet firmware if the app offers.

Android 12+ phones may require additional permission for “Precise Location” for Bluetooth scanning, which must be provided manually:

Settings → Applications → Mi Fitness → Permissions → Location → Allow all the time

💡

On Android 10 and later, turn off the power saving mode for the Mi Fitness app before connecting (Settings → Battery → Energy Saving → Mi Fitness → Without restrictions).

Interface with the iPhone: features and limitations

Connecting the Mi Band 4 to the iPhone has several key differences:

• 📱 Requires iOS 10.0+ (iPhone 5s older).
• 🔄 Data synchronization is less common than on Android.
• 🚫 Some features (such as unlocking your phone) are not available.

Instructions for iOS:

1. Install Mi Fitness from the App Store and sign up.
2. Turn on Bluetooth at the iPhone Control Point.
3. In the app, click "+" → "Breasure" → "Mi Smart Band 4".
4. Confirm the code on the bracelet (click on its screen to activate the display).
5. Allow notifications for the application (Settings → Mi Fitness → Notifications → Allow).

On the iPhone, the bracelet will not display notifications from messengers if the notifications for the Mi Fitness app are disabled in iOS settings.

iPhone settings → Notifications → Mi Fitness → Allow notifications → Enable “Sounds” and “Signs”

💡

If the bracelet does not vibrate when notified after you have connected, check the settings in Mi Fitness: Device Profile → Notifications → Enable vibration.

Setup of the bracelet after connecting

After successful pairing, we recommend immediately configuring the main parameters:

1. Personal data

Go to Profile → Personal Data and specify:

• 👤 Paul
• 📏 Height and weight
• 🎯 Target number of steps (by default 10 000)

Notifications

In Device Profile → Notifications, select apps whose alerts will be duplicated on the bracelet. To save battery, disable unnecessary ones (such as games or push notifications).

3. Screen and brightness

Set it up:

• 🌓 Auto-lighting of the screen when lifting the hand
• ⏱ Screen time (recommended) 5-10 seconds)
• 🎨 Color scheme of the dial (available 5)+ variant)

Solving common problems

Even after a successful connection, users encounter common errors, and here's how to fix them:

⚠️ Note: If the bracelet has stopped synchronizing data (steps, sleep, pulse), check your phone settings → Battery savings: Many battery "optimizers" (e.g., battery life, MIUI Battery Saver or Huawei Power Genie block Mi Fitness background.

If the bracelet is not detected after updating the phone’s firmware (for example, from Android 11 to Android 12), try:

1. Remove the bracelet from the Bluetooth device list manually (Settings → Bluetooth → Mi Band 4 → Forget the device).
2. Clear the cache of the Mi Fitness app (Settings → Applications → Mi Fitness → Storage → Clear the cache).
3. Reboot the phone and bracelet.

⚠️ Note: Some Samsung phones with One UI The bracelet may be disabled due to the function "Automatically disable unused devices." → Connections → Bluetooth → Additionally. → Auto-disconnection.

Update firmware and reset settings

Regular firmware updates fix bugs and add new features to update Mi Band 4:

1. Make sure the bracelet is at least 50% charged.
2. Connect to a stable Wi-Fi network (update via mobile Internet may be interrupted).
3. In Mi Fitness, go to Device Profile → Firmware Update.
4. Wait until the process is completed (don’t interrupt!).

If the bracelet has become incorrect after the update (for example, does not show notifications or quickly discharges), reset:

On the bracelet: Settings → Reset → Confirm (hold the 5 sec button)


In the application: Device profile → Untie → Connect again

💡

After resetting, all data on the bracelet (steps, sleep, training) will be deleted.

FAQ: Answers to Frequent Questions