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

Why Mi Band 4 is not connected to your phone and how to fix it

The Xiaomi Mi Band 4 fitness bracelet remains one of the most popular wearables due to its combination of price, functionality and reliability. However, even with such a proven device, users often encounter problems when connecting to an Android smartphone for the first time. Typical complaints are: the bracelet is not on the list of available devices, the connection is terminated after a few seconds, or the Mi Fit application (now Zepp Life) gives an error “failed to connect”.

The reasons can be found in software failures (obsolete bracelet firmware, app cache) and hardware nuances (discharged battery, conflict with other Bluetooth devices). In this article, we will analyze the step-by-step connection instructions, consider common errors and their solutions, and give tips for optimizing the bracelet after synchronization.

If you've tried to connect Mi Band 4 and you've had a problem, don't rush to reset your bracelet settings. 80 percent of the time, it helps to get the right sequence of actions and clear the app cache. Let's start with the device preparation.

Preparing the phone and bracelet before connecting

Before you start pairing, make sure both devices are ready to connect, and neglecting this step is the main cause of errors such as "Device not found" or "Pairing impossible."

On the smartphone side:

• 📱 Update Android to the latest version. Older firmware (below Android 8.0) may not have the necessary Bluetooth Low Energy (BLE) protocols that Mi Band 4 uses.
• 🔄 Reboot the phone. This clears the temporary data of the Bluetooth module, which can block the new connection.
• 🚫 Turn off VPN and power saving modes. These often limit background activity of applications, including Zepp Life.
• 📲 Remove older versions of Mi Fit/Zepp Life. If you previously had a Mi Band 3 or other Xiaomi device installed, a data conflict may interfere with the new connection.

On the side of the bracelet:

• 🔋 Charge the Mi Band 4 to at least 50%. At low charge, the bracelet can shut off during synchronization.
• 🔄 Reset if the bracelet has already been paired with another phone, and press the touch button on the bracelet screen for 10 to 15 seconds until the vibration and Mi logo appear.
• 📶 Make sure the bracelet is on. Press the touch button, the screen should light up. If there is no reaction, plug it into charging for 30 minutes.

If you are connecting the bracelet for the first time, skip the reset. For used devices, reset is mandatory - otherwise the new phone will not be able to "grab" the bracelet due to the binding to the previous owner.

⚠️ Warning: Do not use third-party applications to reset the Mi Band 4 (such as Notify & Fitness or Tools & Mi Band) that can damage the firmware of the bracelet, making it unsuitable for official software.

Installation and configuration of the Zepp Life app (formerly Mi Fit)

The official Xiaomi Mi Band 4 management app is Zepp Life (formerly Mi Fit), which can be downloaded from Google Play or Xiaomi's official website. It's important to use only the latest version, as older releases may not support new Bluetooth protocols.

Installation instructions:

1. Download Zepp Life here (check that the developer is Huami Inc.).
2. Launch the app and sign up through a Xiaomi, Google or Facebook account. Without an account, data synchronization will not be possible.
3. Provide all permissions requested: 📍 Geolocation (required for accurate activity tracking). 📱 Notifications (to display messages on the bracelet). 📁 Storage (for data backup).

Add the device

Mi Smart Band 4

If the app does not find the bracelet, check:

• 🔵 Is Bluetooth enabled on your phone (not only in the notification panel, but also in the system settings).
• 🔄 Try restarting Bluetooth: turn it off for 10 seconds and turn it on again.
• 📱 Make sure Zepp Life is not locked in the battery settings (path: Settings → Apps → Zepp Life → Battery → No Limits).

Install Zepp Life|Charge the Mi Band 4 to 50%+|Turn on Bluetooth on your phone|Provide all permissions to the application|Remove the bracelet (if used)-->

If after these steps the bracelet is still not found, move to the next section - there we will analyze solutions for complex cases.

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

Now, let's move directly to pairing. Follow the instructions strictly by step, and skipping any point can cause a failure.

Step 1: Activate the bracelet pairing mode

1. Press the Mi Band 4 touch button to unlock the screen.
2. Scroll the menu to the right to the item "More"
3. Select "Pair" (Bluetooth icon) The bracelet will blink and vibrate, which means it's ready to connect.

Step 2: Search for a device in Zepp Life

1. In the Zepp Life app, click "Add Device" → "Mi Smart Band 4".
2. Press "Plug in." The app will start scanning.
3. When your Mi Band 4 appears on the list (the name will be like “Mi Band XXXX”, where XXXX is the last digit of the MAC- address), select it.

Step 3: Confirmation of connection

1. On the phone will appear a request for pairing - click "Connect" or "Couple".
2. The bracelet will have a 4-digit code on its screen, compare it to the code in the app, and if they match, confirm the connection by pressing the touch button on the bracelet.
3. Wait until sync is complete (it can take up to 2 minutes) and don't close the app or lock your phone!

Step 4: Set up the main parameters

After successful connection, the application will offer:

• ⏰ Set the time and date (they sync with the phone automatically).
• 🔔 Select notifications that will come to the bracelet (calls, SMS, messengers).
• 🏃‍♂️ Indicate personal data (height, weight, gender) for correct calorie counting.

If there is an error at any stage, check:

Solving common connection problems

Even after successful pairing, users often encounter problems, and let's look at typical scenarios and how to fix them.

Problem 1: The bracelet is plugged in, but immediately shut down

Most often, this is due to the power saving mode on the phone, many manufacturers (Samsung, Xiaomi, Huawei) aggressively optimize the background operation of applications, which causes Zepp Life to lose connection.

Decision:

1. Go to Settings → Applications → Zepp Life → Battery.
2. Select “No restrictions” or “Allow background activity”.
3. Add the application to the optimization exception list (the item name may vary depending on the firmware).

Problem 2: Notifications are not received on the bracelet

If calls and SMS are displayed, and messages from messengers (WhatsApp, Telegram) are not, the reason is the notification settings.

Decision:

• 📱 In Zepp Life, go to Profile → Mi Smart Band 4 → Notifications.
• 🔔 Turn on the Notifications switch and select the desired applications.
• 🔄 On your phone, check that notifications are allowed for messengers (Settings → Applications → [Messenger] → Notifications).

Problem 3: The bracelet does not detect the pulse or steps

This may be related to:

• 🩺 Incorrect position on the arm (the sensor should fit tightly to the skin, but not clench the arm).
• 🔋 Low battery power (below 20% sensors may not work properly).
• 📱 No synchronization (data is collected on the bracelet but not transmitted to the application).

Solution: Run manual synchronization in Zepp Life (pull the screen down) and check the bracelet’s adhesive density.

💡

If the bracelet stopped vibrating when notified, check the settings in Profile → Mi Smart Band 4 → Vibration. Perhaps the alarm or notification mode is turned off.

⚠️ Warning: Android 12+ phones may require additional permission to access notifications. If no messages arrive after setting up in Zepp Life, go to Settings → Apps → Zepp Life → Permissions → Notifications and enable access.

Optimizing the Mi Band 4 after connecting

Successful pairing is just the first step, and to make the bracelet work as smoothly and as efficiently as possible, customize it to suit your needs.

1. Screen and interface setting

In Zepp Life, you can change:

• 🎨 Dial (pull down on the bracelet's home screen → "More dials").
• 🔍 Screen brightness (Profile → Mi Smart Band 4 → Display and brightness).
• 🔒 Screen lock (you can turn off if you rarely remove the bracelet).

2. Notification management

To avoid missing important messages, but also not to fill the bracelet with spam:

• 📵 Disable notifications from unnecessary apps (social media, games).
• 🔔 Enable Do Not Disturb on your sleep bracelet (Profile → Mi Smart Band 4 → Do Not Disturb).
• 📞 Set up quick calls (you can turn down calls right off the bracelet).

3. Battery saving

The Mi Band 4 holds a charge of up to 20 days, but with active use (constant pulse monitoring, notifications), the operating time is reduced.

• ⚡ Turn off automatic pulse monitoring (leave manual measurements only).
• 🌙 Reduce the screen backlight time to 5 seconds.
• 📴 Turn off notifications of incoming calls if they are duplicated on the phone.

💡

For maximum accuracy, wear a wristband 2-3 fingers above your wrist, and the pulse sensor should touch the skin, but not press it.

Alternative ways to connect (if the standard one does not work)

If Zepp Life stubbornly refuses to see the bracelet, try alternative methods. They're less reliable, but sometimes they help in desperate situations.

Method 1: Connect via Android settings (without the app)

This method is suitable for checking whether the phone sees the bracelet at the hardware level:

1. Open Settings → Connected devices → New device.
2. Enable pairing mode on Mi Band 4 (as described above).
3. Wait until the bracelet appears on the list (the name will be "Mi Band XXXX").
4. Connect it as a normal Bluetooth device.

Limitation: Without Zepp Life, you won’t be able to set up notifications and sync data, but at least make sure the problem isn’t with the hardware malfunction of the bracelet.

Method 2: Using Third-Party Applications

If the official software doesn’t work, try:

• Notify & Fitness for Mi Band (supports Mi Band 4, but with limited functionality)
• Tools & Mi Band (allows you to flash the bracelet, but risky for beginners)

Warning: Third-party applications may:

• 🚫 Deregister warranties (if the bracelet is new).
• 🔧 Damage the firmware (if you interrupt the update process).
• 📵 Do not support the latest versions of Android.

Method 3: Resetting the bracelet to factory settings

If nothing helps, do a hard reset:

1. Unplug your bracelet from your phone in Zepp Life.
2. Charge it to 100%.
3. Press the touch button for 20-30 seconds until the Mi logo and vibration appear.
4. Repeat the connection process from scratch.

⚠️ Warning: After resetting, all the data on the bracelet (steps, sleep, exercise) will be deleted. If it is not synchronized with the application, it will not be possible to restore it.

FAQ: Frequent questions about connecting Mi Band 4