Connecting Xiaomi Smart Band 4 to your smartphone: full instructions with pictures and tips

The Xiaomi Mi Smart Band 4 fitness bracelet remains one of the most popular gadgets for monitoring activity despite the release of new models, its main advantages are affordable price, long battery life (up to 20 days in standby mode), and a wide range of functionality from step counter to notifications from a smartphone. But before the first use, the bracelet must be properly connected to the phone — and here beginners often have questions.

In this article, you will find step-by-step instructions on how to pair the Mi Band 4 with Android and iOS devices, including the nuances of setting up the Mi Fitness app (formerly Mi Fit), solving typical errors and tips for optimizing work. We will also discuss why the bracelet may not connect to the phone and how to fix it without going to the service center.

Important: the connection procedure for Mi Band 4 and Mi Band 4 NFC is identical - the only difference is the presence of the contactless payment module in the second version.

1. What will be required to connect

Before you start pairing, make sure you have everything you need:

• 📱 Smartphone on Android 5.0+ or iOS 10.0+ Bluetooth 4.0 (or later) version of the OS in the phone settings.
• 💍 Fitness bracelet Xiaomi Mi Smart Band 4 with a battery charge of at least 20.
• 📲 Mi Fitness (you can download it from Google Play or App Store) is no longer supported.
• 🔋 Bracelet charger (if discharged) Use only the original cable - cheap analogues can damage the contacts.

Also, make sure that your phone is Bluetooth enabled and that you are allowed to access notifications for the Mi Fitness app, without which the bracelet will not be able to show incoming calls and messages.

⚠️ Note: If you have previously used the Mi Band 3 or older bracelet, remove it from the app before connecting the Mi Band 4.

2. Installation and configuration of the Mi Fitness application

The Mi Fitness app is the central tool for controlling the bracelet, and it needs to be installed, it needs to be configured correctly. Here's how to do it:

1. Download Mi Fitness from the official app store. Avoid third-party sites, which are often where viruses occur.
2. Launch the app and sign up or sign in to an existing Xiaomi account. If you don't have an account, create it via email or phone number.
3. In the main menu, click Profile → Settings → Add the device.
4. Select from the Mi Smart Band 4 list (if not, update the app).

After that, the app will offer to enable notifications, access to geolocation and synchronization of data with health (for example, with Google Fit or Apple Health), we recommend that you allow all requests – this will expand the functionality of the bracelet.

If the app requests access to contacts or calendar, you can opt out — it's not critical for the bracelet to work, but without access to notifications, you won't be able to see incoming messages on the Mi Band 4 screen.

3. Step-by-step connection of Mi Band 4 to the phone

Now, to the pairing itself, follow the instructions carefully, and skipping the steps can lead to errors.

1. Turn on the bracelet by pressing the touch button below the screen. Wait for the Mi logo to appear.
2. In the Mi Fitness app, click Add Device → Mi Smart Band 4.
3. It'll appear on the phone screen. QR-Put the bracelet up to the camera of the phone so that the code gets into the lens. The alternative is to enter a 6-digit code that will appear on the bracelet screen.
4. Confirm pairing on both devices. A tick will appear on the bracelet, and a message in the app will appear: Device is connected.

If the bracelet doesn't respond to touch, try resetting it: plug it in, wait for the vibrations and disconnect. Also check that there are no scratches on the screen - they can block the sensor.

⚠️ Note: If you connect the bracelet to the iPhone, before pairing, turn off VPN Check that the phone is not in charge saving mode, and these features can block a stable connection to the Mi Band 4.

4.Setting up the bracelet after connecting

After successful pairing, you need to adjust the basic parameters of the bracelet. This will take no more than 5 minutes:

• 🕒 Time and date: Automatically syncs to your phone. If it shows the wrong time, check Settings. → Date and time on the smartphone.
• 🔔 Notifications: Enable alerts for calls, SMS And messaging apps (WhatsApp, Telegram, etc.) at Mi Fitness, go to Profile. → Mi Smart Band 4 → Notifications.
• 🏃 Activity goals: Set a daily rate of steps (default: 8,000). → Targets.
• 🔒 Screen lock: Activate PIN-code for the bracelet so that no one can view your data. → Screen locking.

Important: If you use a sleep monitoring bracelet, turn off the "Do Not Disturb" mode on your phone at night, otherwise your sleep data may not be recorded correctly.

An additional feature is available for Android users, which is to unlock the phone with a bracelet, to activate it:

1. Go to Settings → Security → Unlock Mi Band.
2. Follow the instructions on the screen (you will need to turn on Bluetooth and allow access to control the device).

💡

To extend the life of the bracelet battery, turn off the permanent display of time on the screen. To do this, go to Device Settings → Display → Raise your hand to activate and select Only when pressed.

5. Typical errors and their solution

Even with the right connection, users sometimes face problems, and here are the most common ones and ways to fix them:

🔴 The bracelet is connected, but does not sync the data

Reasons:

• Weak internet connection on the phone.
• An outdated version of the Mi Fitness app.
• Conflict with other fitness apps (e.g. Google Fit)

Decision:

1. Update Mi Fitness to the latest version.
2. Turn off the mobile internet and connect to Wi-Fi.
3. Reset the bracelet (press the touch button for 10 seconds).

🔴 Bracelet is constantly disconnected from the phone

This may be due to:

• Too much distance between devices (maximum 10 meters).
• Active energy saving mode on the phone.
• Interference from other Bluetooth devices (headphones, speakers).

Decision:

Add Mi Fitness to the battery optimization exception list (Settings → Battery → Android Battery Optimization). On your iPhone, turn off low power mode.

🔴 Notifications don't come in.

Check it out.

• Are notifications for Mi Fitness allowed in your phone settings?
• Whether alerts for specific apps (such as Viber or Instagram) are included in the wristband menu.
• Is the bracelet in the mode Do not disturb (disables in Settings → Modes).

💡

If the bracelet has stopped responding to touch, reset it to factory settings: press the touch button for 20 seconds until the Mi logo appears.

6 How to disconnect Mi Band 4 from your phone

If you want to connect the bracelet to another smartphone or sell it, you first need to break the current binding.

📱 Through the Mi Fitness app

1. Open Mi Fitness and go to Profile → Mi Smart Band 4.
2. Click on the three dots in the upper right corner and select Remove the device.
3. Confirm action. The bracelet will be dropped to factory settings.

🔄 Through a bracelet reset.

If no telephone access:

1. On the bracelet, go to Settings → Additional → Reset (scroll the screen with swipes).
2. Confirm the reset by pressing the touch button.
3. After the reset, the bracelet will be ready for a new connection.

After disconnecting all data from the bracelet will be deleted, but it will remain in your Xiaomi account.

⚠️ Warning: If you sell a bracelet, be sure to log out of your Xiaomi account in the app and reset the device.The new owner will not be able to use the gadget while it is tied to your profile.

7. Compatibility with other devices

Xiaomi Mi Smart Band 4 officially supports:

• 🤖 Android 5.0 and higher (including Xiaomi, Samsung, Huawei, etc.).
• 🍎 iOS 10.0 and higher (iPhone) 5s newer).

But there are nuances:

• On the iPhone is not available the function of unlocking the phone through the bracelet.
• On some Huawei and Honor phones, you may need to turn off power saving for Mi Fitness.
• Windows Phone or Garmini bracelet is not compatible.

For owners of Xiaomi-smartphones, additional functions are available:

• 🔗 Automatic synchronization with Health (Health).
• 🎵 Music control through a bracelet (playback/pause, track switching).
• 📸 Quickly launch the phone camera from the bracelet.

8. Frequently Asked Questions (FAQ)