Xiaomi Mi Band 4 Connection to Bluetooth: A Complete Guide to Error Solutions

The Xiaomi Mi Band 4 fitness bracelet remains one of the most popular wearables due to its combination of affordable price and wide functionality. However, many users face difficulties when connecting to a smartphone for the first time via Bluetooth. Unlike the newer models (Mi Band 5/6/7), the fourth version requires a special approach due to outdated firmware and specifics of working with the Mi Fit application (now Zepp Life).

In this article, you will find step-by-step instructions on pairing the Mi Band 4 with Android and iPhone, analyze common errors (such as code 10008 or endless “device search”), and give recommendations on how to optimize the connection to save battery.

If your bracelet has previously been tied to another phone, you should reset it to factory settings before connecting to the new device, otherwise you will get an error "the device is already paired." Reset instructions are given in one of the sections below.

It’s also important to consider that the Mi Band 4 supports Bluetooth 4.2, but can conflict with newer versions of the protocol (5.0+) on modern smartphones.

1.Preparation for connection: what to do before pairing

Before you start connecting, make sure all the preconditions are met, which will save you 80% of the typical sync problems.

Requirements for a smartphone:

• 📱 Operating system: Android 5.0+ or iOS 10.0+ (iPhone 5S On Android 4.4 and below, the bracelet will not work.
• 🔄 Bluetooth: version 4.0 or higher, check in the phone settings (Settings) → The phone. → Information on the PO).
• 📶 Internet: stable connection to Wi-Fi or mobile network (necessary for downloading the bracelet firmware).
• 🔋 Bracelet charge: at least 20%.At a level below 15%, Mi Band 4 will refuse to establish a connection.

If you have updated the bracelet firmware through third-party utilities (such as Notify & Fitness or Mi Bandage), make a full reset through the original app before connecting to your new phone.

Important: Mi Band 4 bracelets with firmware version 1.0.9.54 and higher require binding to a Xiaomi account. Without authorization in Zepp Life, connection will not be possible.

Install the Zepp Life app (formerly Mi Fit)|Turn on Bluetooth on your smartphone|Charge the bracelet to 20%+|Untie the bracelet from the old phone (if tied up)|Log in to your account Xiaomi/Zepp-->

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

The pairing process on Android consists of 5 key steps. Follow them in strict sequence to avoid errors.

Step 1: Installation of the application

Download the official Zepp Life app (formerly Mi Fit) from Google Play. Avoid clones and modified versions - they may contain malicious code or not support the latest bracelet firmware.

Step 2: Registration of an account

When you first start up, Zepp Life will offer you an account.

• 📧 Email registration (recommended for stability)
• 📱 Linking to a phone number (convenient, but can cause problems when changing) SIM)
• 🔄 Entrance Google/Facebook (It is very fast, but sometimes requires confirmation. SMS)

If you already have a Mi Account, use it – the bracelet data will be synced automatically.

Step 3: Activate Bluetooth and search for the device

Turn on Bluetooth on your smartphone and allow Zepp Life to access geodata (required for Android 6.0+).

1. Open the application and tap the icon "+" (add device).
2. Choose Bracelet → Mi Smart Band 4.
3. Click "Connect" and wait for the bracelet to appear in the list.

Step 4: Synchronize and update the firmware

Once paired successfully, the app will suggest updating the bracelet firmware. Don't refuse, it will fix most of the plug-in bugs. It will take 5-10 minutes to update. Don't interrupt the process or leave the app!

Step 5: Set up notifications

To have the bracelet show incoming calls and messages:

1. Go to Profile. → Mi Smart Band 4 → Notifications.
2. Turn on the "Notification" switch.
3. Select the applications you want to see alerts from (WhatsApp, Telegram, etc.).
4. Allow Zepp Life to access notifications in your Android settings (Settings → Apps → Zepp Life → Notifications).

Android|iOS| Other (specify in the comments)|I don't know-->

Connecting Mi Band 4 to iPhone (iOS): Features and Limitations

iPhone owners often face problems connecting the Mi Band 4 due to Apple's limitations, with the main difficulty being the lack of background synchronization support, which leads to delays in updating step and pulse data.

Differences from Android:

• ⚠️ No way to install third-party dials (only standard ones from Zepp Life).
• 🔕 Call notifications come without a contact name (only number).
• 📶 Data synchronization only occurs when the application is open.

Instructions for iOS:

1. Download Zepp Life from the App Store.
2. Register an account (it is recommended to use email).
3. Turn on Bluetooth and allow notifications (Settings → Zepp Life → Notifications).
4. Add the bracelet through Profile → Add the device → Mi Smart Band 4.
5. Confirm the pairing on the bracelet (light touch on the screen).

If the bracelet is not present, try:

• 🔄 Reboot iPhone and bracelet (hold the button on Mi Band 4 for 10 seconds).
• 📱 Turn off/enable Bluetooth at the Control Point.
• 🚫 Remove all previously saved Bluetooth devices in iOS settings (Settings) → Bluetooth, swipe left over unnecessary devices).

💡

On the iPhone before connecting, turn off the "Energy Saving" mode - it blocks the background work of Bluetooth, which prevents synchronization.

4. Typical connection errors and their solutions

Even if you follow the instructions correctly, users are faced with errors, and let's look at the most common ones and how to fix them.

Table: Error and decision codes

Additional challenges:

• 🔴 The bracelet connects but doesn’t sync data: check the permissions for Zepp Life in your phone settings (access to physical activity, notifications, geodata).
• 🔴 After updating the firmware bracelet stopped responding: reset through bracelet settings → Resetting in annex.
• 🔴 No notifications on iPhone: Turn on the “Show Preview” option in iOS notification settings.

5.How to reset Mi Band 4 to factory settings

Reset is necessary in three cases:

1. The bracelet was previously tied to another phone.
2. There was an error when updating the firmware.
3. The device is unstable (hangs, incorrect pulse data).

Method 1. Through the Zepp Life app

Method 2. Hardware reset (if the bracelet is not connected)

⚠️ Warning: hardware reset removes all data from the bracelet, including activity history!

6. Connection optimization: how to reduce battery consumption and improve stability

By default, the Mi Band 4 is constantly synced to the phone, which leads to a quick discharge of both devices.

Settings to save battery:

• 🔋 Synchronization interval: set data updates every 30 minutes instead of 5 (Profile) → Mi Smart Band 4 → Synchronization of data).
• 📵 Notifications: Disable alerts from unnecessary apps (such as games or news services).
• 🌙 Screenlighting: Reduce display time to 5 seconds (Display) → Illumination).
• 🔍 Phone Search: Turn off this feature if you don't use it (More) → Phone search).

How to improve the stability of the connection:

• 📶 Distance: Keep your phone and bracelet at a distance of no more than 10 meters in line of sight.
• 🔄 Reconnect: If the connection breaks, disconnect and reconnect the bracelet in Bluetooth settings.
• 🛡️ Interference: Avoid using the bracelet near microwaves, 5GHz routers, or other sources of interference.

💡

For maximum stability, turn off the automatic Wi-Fi/Bluetooth switching feature on your phone (on Android 10+).

7. Alternative ways of connecting: if the standard method does not work

If the bracelet stubbornly doesn't want to connect via Zepp Life, try alternative methods. They'll be suitable for power users and owners of custom firmware devices.

Method 1 Connect via Notify & Fitness (for Android)

Notify & Fitness app allows you to bypass the restrictions of official software and connect the bracelet even without a Xiaomi account.

Advantage: support for custom dials and advanced notifications. Disadvantage: possible bugs with step synchronization.

Method 2: Manual connection via Bluetooth settings

This method works if the bracelet is determined by the system, but is not connected through the application:

1. Open Bluetooth settings on your phone.
2. Find the Mi Smart Band list 4 (usually displayed as MI Band 4_XXXX).
3. Slip the device and confirm the pairing.
4. Start Zepp Life – the bracelet must be automatically determined.

Method 3: Use of Mi Fit (old version)

If Zepp Life doesn’t see the bracelet, try installing an outdated version of the Mi Fit (4.6.0):

⚠️ Note: the use of third-party applications may lead to loss of warranty and unstable operation of the bracelet.

FAQ: Answers to Frequent Questions