Connecting Xiaomi Mi Band 3 to a smartphone: full instruction with error solutions

The Xiaomi Mi Band 3 fitness bracelet remains a popular gadget even years after its release, thanks to its reliability, long work time and wide functionality. However, many users have difficulties with the first connection of the device to a smartphone, especially if it is a question of old or unofficial firmware. In this article, we will analyze all the ways of synchronization (through Mi Fit, Zepp Life and alternative applications), consider typical errors and give recommendations for optimizing the bracelet.

It’s important to understand that the Mi Band 3 connection process is different from newer models (like the Mi Band 7 or Smart Band 8) because the device doesn’t support Bluetooth 5.0 and modern encryption protocols.This can cause problems on the latest versions of Android and iOS. We tested instructions on current OSes (Android 14, iOS 17) and put together workarounds for all scenarios.

Preparation for connection: what to check before synchronization

Before you start pairing the bracelet with a smartphone, make sure that the basic conditions are met:

• 📱 Version of the smartphone OS: Android 6.0+ iOS 10+. On older systems, Mi Fit may not be installed.
• 🔋 Bracelet charge: Minimum level - 20%. At low charge, the connection will be interrupted.
• 📲 Bluetooth: On your smartphone and in detection mode. On Android, check the location permission (required for Bluetooth to work) LE).
• 🚫 Conflicting apps: Close other fitness trackers (Google Fit, Huawei Health) – they can block the connection.

On Android, after installing Mi Fit or Zepp Life, you must manually allow:

• 📍 Access to geodata (required for Bluetooth device search).
• 📁 File storage (for firmware updates).
• 🔔 Notifications (to allow the bracelet to display incoming calls and messages).

⚠️ Note: If you use custom ROM (For example, LineageOS or a smartphone with uncertified firmware, Mi Band 3 may not connect due to a lack of Google services. In this case, try the Notify & Fitness app (available in F-Droid).

Method 1: Connect via the official Mi Fit app

Mi Fit is the main Mi Band 3 management app, although Xiaomi is gradually replacing it with Zepp Life.The instruction is relevant for both programs, but the interface may be slightly different.

Steps for synchronization:

1. Download Mi Fit from Google Play or App Store.
2. Sign up or sign in through your Xiaomi account (required! without an account, the bracelet doesn't sync).
3. Click Profile → Add Device → Bracelet → Mi Smart Band 3.
4. Allow the app to access Bluetooth and geodata.
5. Wait until the bracelet appears in the list of available devices, and confirm the connection by pressing on its screen.

If the bracelet is not listed:

• 🔄 Reboot Bluetooth on your smartphone and bracelet (to do this, press the touch button on the Mi Band 3 for 10 seconds).
• 📵 Make sure the bracelet is not connected to another device (only synced to one smartphone at a time).
• 🔧 In the Bluetooth settings of the smartphone, delete all saved devices with the name MI Band 3 or LE-MIB3.

Make sure the bracelet is charged.|Enable Bluetooth and geolocation|Close conflicting applications|Reset the bracelet (clamb the button for 10 seconds)|Remove old pairings in Bluetooth settings-->

⚠️ Note: On the iPhone, after you connect, you may experience an error "Data failed to sync" due to the limitations of iOS on the background operation of Bluetooth. → Mi Smart Band 3 → Parameters → Synchronize data and start the process manually.

Method 2: Alternative applications (if Mi Fit doesn't work)

If the official app refuses to connect, try third-party solutions. They support Mi Band 3 and often bypass the limitations of new versions of Android/iOS.

To connect via Notify & Fitness:

1. Install the application and provide all the permissions requested.
2. In the main menu, click Connect the device → Mi Band 3.
3. Follow the instructions on the screen. If the bracelet is not found, try turning on Developer Mode in the app settings.

💡

If the bracelet connects but doesn’t sync steps, check your Android energy saving settings. Add Mi Fit or an alternative app to the Battery Optimization Exceptions list (path: Settings → Battery → Battery Optimization → All apps).

Solving common connection errors

Even with the right setup, users face typical problems, and let's look at the most common ones and how to fix them.

Error: "I was unable to connect to the device"

Causes and solutions:

• 🔌 Bracelet discharged: Connect to charging for 30 minutes, even if the indicator shows charge.
• 📡 Bluetooth Interference: Disable other devices (earphones, speakers) and try connecting elsewhere.
• 🔄 Firmware conflict: If the bracelet has previously been connected to another phone, reset it to factory settings (press the button 20 seconds before vibration).

Error: "The device is not supported"

This problem is occurring on new Android 12+ smartphones due to a change in Bluetooth policy.

• 📥 Install the old version of Mi Fit (e.g. 4.6.0) from APKCombo.
• 🔧 Enable Compatibility Mode in Android Developer Settings (how to enable: Settings) → The phone. → Assembly number - press 7 times).

Error: "It is impossible to update the firmware"

Mi Band 3 does not support firmware updates via Mi Fit on Android 11+ and iOS 15+.

1. Download the firmware manually from the official website (select the XMSH07HM model).
2. Place the.fw file in the Mi Fit/firmware folder on your phone.
3. In the app, go to Profile → Mi Band 3 → Update the firmware and start the process.

Configure notifications and additional functions

After successful connection, adjust the bracelet to your needs.

• 🔔 Notifications: In Mi Fit go to Profile → Mi Band 3 → Notifications and select apps that will duplicate alerts on the wristband. iOS requires additional permission in Settings → Notifications → Mi Fit.
• 🌙 Screenlighting: Set the backlight display time (5 to 30 seconds) in the Display → Illumination.
• 🏃 Activity goals: Set daily goals for steps, calories, and sleep time in the Goals section.
• 🔒 Screen lock: Activate unlocking your phone through the bracelet to Security → Unlocking the device (requires Android 6.0)+).

For advanced users:

• 🎨 Custom dials: Set third-party dials via Amazfit Watch Faces (root or required) ADB firmware).
• 📊 Data Export: Use Google Fit or Apple Health to sync statistics with other services.

💡

For stable notifications on Android, you need to disable battery optimization for Mi Fit and add the application to Auto Start (the setting is in the battery menu of most smartphones). Xiaomi/Redmi).

Update firmware and reset settings

Regular firmware updates fix bugs and add new features (e.g. support for additional languages).However, the current firmware version for Mi Band 3 is 1.1.0.84 (released in 2020), new updates for this model are not coming.

How to update:

1. Open Mi Fit and go to Profile → Mi Band 3 → Firmware Update.
2. If the update is not available, download the file manually (see the error section) and place it in the /Mi Fit/firmware/ folder.
3. Connect the bracelet to charging and wait until the process is complete (don’t turn off USB!).

For a complete reset of settings:

1. On the bracelet, go to Settings → More → Reset (slip down).
2. Confirm the action by pressing the screen.
3. After resetting, the bracelet will automatically reboot and be ready for a new connection.

⚠️ Attention: Setting reset removes all data from the bracelet (steps, sleep, alarm clocks), but does not affect the statistics in the Xiaomi account. To save the history, pre-sync the data in Mi Fit.

Compatibility with other devices

Mi Band 3 can be connected not only to smartphones, but also to other gadgets:

• 💻 PC (Windows/macOS): Through Gadgetbridge (Open Software) or Mi Band 3 Tools (Bluetooth adapter required) 4.0+).
• 📺 Xiaomi TVs: Bracelet can be used for control TV via Mi Home (Smart Home function").
• 🚴 Bike Computers: Sync with Strava or Komoot via Mi Fit.

To connect to the PC:

1. Download Gadgetbridge.
2. Turn on Bluetooth on your computer and start searching for devices in the program.
3. Select Mi Band 3 from the list and confirm pairing.

Limitations:

• MacOS may require an additional Bluetooth driver (e.g. BlueSoleil).
• Notification and call functions work only when connected to a smartphone.

FAQ: Frequent questions about Xiaomi Mi Band 3