Connecting Xiaomi Mi Band 4 to a smartphone: full instructions with pictures and tips

Why do you need to sync Mi Band 4 with a smartphone?

The Xiaomi Mi Band 4 fitness bracelet is one of the most popular wearables on the market, thanks to its combination of affordable price and wide functionality. However, without the right connection to the phone, you lose 80% of its capabilities. Synchronization allows you not only to track your steps and pulse, but also to receive notifications about calls, manage music, use contactless payments (in versions of NFC), and even monitor sleep with detailed analytics.

Many users have difficulty connecting for the first time: the bracelet is not detected by the phone, the Mi Fit app (or Zepp Life) gives out errors, and the instructions out of the box contain only basic steps without explanation. In this article, we will analyze all the stages of connection from preparing the smartphone to setting up notifications, and also solve the typical problems that arise for owners of the Mi Band 4 in 2026.

Importantly, if you've updated the firmware of the bracelet or reset it to factory settings, the connection process may be different from the original, and we've taken these nuances into account and added separate instructions for these cases.

Preparation for connection: what to check before starting

Before you start syncing, make sure your smartphone and bracelet are ready to go, and skipping these steps often causes connection failures.

• 📱 Smartphone Compatibility: Mi Band 4 It works with Android 5.0+ iOS 10.0+. Check the OS version in the phone settings (Settings) → The phone. → Version. Android/iOS).
• 🔋 Bracelet charge: Battery level must be at least 20%.When the discharge is less than 10%, the bracelet can be turned off during synchronization.
• 📶 Bluetooth and Internet: Turn on Bluetooth on your phone and connect to Wi-Fi or mobile internet (the app will need to download data).
• 🚫 Conflicting apps: Close other fitness trackers (like Google Fit or Huawei Health) as they can block the connection.

If you have previously used another Xiaomi fitness bracelet (such as Mi Band 3), remove it from the Mi Fit/Zepp Life app to avoid conflict. To do this, go to Profile → My Devices and click “Delete”.

Installation and configuration of the Mi Fit or Zepp Life app

The official Mi Band 4 management app is Mi Fit (for older bracelet versions) or Zepp Life (recommended for newer firmware), both of which are free, but have different interfaces and features. We'll look at both.

For Android:

1. Download Zepp Life from Google Play or Mi Fit (if your bracelet doesn’t support Zepp).
2. Launch the app and sign up via Xiaomi Account, Google or Facebook.
3. Sign in to your account and confirm access to notifications (this is necessary for the alerts to work).

For iOS:

1. Install Mi Fit from the App Store (at 2026, Zepp Life for iPhone has limited functionality).
2. When you first start, allow access to Bluetooth, Notifications and Health (HealthKit).
3. Sign up or sign in to an existing Xiaomi account.

Important: If you use an iPhone, some features (such as music management) may not be available due to iOS limitations.

Install Mi. Fit/Zepp Life|Registering a Xiaomi account|Allow access to Bluetooth|Insert notifications for the annex|Update the application to the latest version-->

How to connect Mi Band 4 to your phone

Now, to the synchronization process itself, follow the instructions carefully, because skipping even one step can lead to an error.

1. Activate the bracelet Press the Mi Band 4 touch button (under the screen) and hold it for 3 seconds until the vibration and the Mi logo appear.
2. Add a device in the app In Mi Fit/Zepp Life, click "+" (or "Add Device") → select "Breacelet" → "Mi Smart Band 4".
3. Bluetooth pairing will start searching for devices when the name of your bracelet appears (e.g., "Mi Band"). 4_1A2B»), You click on it. The bracelet will show a confirmation code -- compare it to the code in the app and click on "Confirm».
4. After you connect, the app will suggest you update the bracelet firmware. Don't refuse, this will fix the bugs and add new features. Wait until it's finished (the bracelet will restart).
5. Select your gender, age, weight and height to accurately calculate your calories and steps, and choose the dominant hand (the one you wear the bracelet on).

If at the interface stage there is an error “I could not connect”, try:

• 🔄 Reboot the bracelet (hold the button for 10 seconds until the logo appears).
• 📱 Restart Bluetooth on your phone.
• 🗑️ Remove the bracelet from the list of conjugate devices in the phone settings (Settings) → Bluetooth and reconnect.

Configure notifications and basic functions

Once connected successfully, we will set up alerts and key bracelet settings, without which you will not be able to receive calls, messages and use other “smart” functions.

How to enable notifications:

1. In the app, go to Profile → Mi Smart Band 4 → Notifications.
2. Activate the “Call Notifications” and “Notifications from Applications” switches.
3. Select the apps you want to see on your bracelet (for example, WhatsApp, Telegram, Gmail).
4. Set up the vibration style and repeat alerts (repeat after 5 minutes for important notifications).

Additional settings:

If the notifications do not arrive on the bracelet:

⚠️ Note: On Xiaomi, Redmi or POCO Check the auto-start settings for Mi Fit/Zepp Life (Settings) → Annexes → Permits → Without this, the application can be closed in the background and notifications will not be duplicated.

Solving common connection problems

Even if you follow the instructions accurately, users are faced with errors, and we've collected typical problems and solutions that are relevant for 2026.

1.The bracelet plugs in but immediately shuts off

• 🔌 Check the power saving mode on your phone – it can limit Bluetooth.
• 📲 Update the bracelet firmware and Mi app Fit/Zepp Life to the latest version.
• 🔄 Reconnect the bracelet: remove it from the app and add it again.

2.The application does not see the bracelet after updating the firmware

• 🛠️ Reset the bracelet to factory settings: in the bracelet menu, find Settings → Reset (or hold the button for 20 seconds).
• 📱 Reinstall the Mi app Fit/Zepp Life.
• 🌍 Check the region of the Xiaomi account – it should match the region of the purchase of the bracelet (for example, “Russia” for the European version).

3. notifications are delayed or not received at all

• 🔔 In the phone settings, turn off battery optimization for Mi Fit/Zepp Life (Settings) → Annexes → Mi Fit → Battery → No restrictions).
• 📵 Make sure the bracelet is within 10 meters of the phone (Bluetooth 5.0 range).
• 🔄 Reboot both devices.

💡

If the bracelet stopped synchronizing data (steps, pulse), try to manually update the indicators: in the application click on the synchronization icon (🔄) top-right corner of the bracelet screen.

How to Reconfigure Mi Band 4 to a New Phone

If you have changed your smartphone or want to connect the bracelet to another device, follow these steps:

1. Untie the bracelet from your old phone In the Mi Fit/Zepp Life app, click on the bracelet name → Untie the device. Also remove it from the list of Bluetooth devices in your phone settings.
2. Reset the bracelet settings On the Mi Band 4 itself, go to Settings → Reset (or hold the button for 20 seconds until the logo appears).
3. Repeat the pairing process described in the “Step-by-Step Instructions” section, but on a new device.

If you use the same Xiaomi account, all your data (activity history, settings) will automatically be uploaded to the new phone. When you change your account, the history will not be transferred - it can be exported manually through Profile → Data Export (available in Zepp Life).

⚠️ Note: When the bracelet is reset, all local data (such as unsynchronized workouts) will be deleted. Make sure the last synchronization is successful before performing the reset.

Tips for operation: how to prolong the life of a bracelet

The Mi Band 4 is known for its durability, but improper use can shorten its lifespan.

• 🔋 Charging: Use only the original cable. Do not leave the bracelet on charging more 2 The battery is damaged by the clock, the optimal level of charge for storage — 40-60%.
• 💦 Waterproof: Bracelet has protection of 5 ATM, It is not recommended to swim with him in a pool with chlorinated water or bathe in a hot bath (temperature above 40).°C may damage seals).
• 📵 Bluetooth: Disconnect the bracelet from your phone if you don’t use it for more than a day (e.g. while you sleep) and reduce your phone’s battery consumption.
• 🧼 Clean: Clean the bracelet and strap with a wet wipe without alcohol. To clean the charging contacts, use a cotton swab dipped in distilled water.

If the bracelet screen is less sensitive, try resetting or updating the firmware, which solves the problem 80 percent of the time without going to the service.

💡

Regularly update the bracelet firmware through the app – this not only adds new features, but also fixes synchronization errors that often occur after updates. Android/iOS.

FAQ: Answers to Frequent Questions