How to connect Mi Band 4C to Xiaomi smartphone: full instructions with error solutions

Xiaomi’s Mi Band 4C 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 the bracelet to a smartphone for the first time – especially if both devices are from the same brand. In this article, you will find detailed instructions on pairing the Mi Band 4C with Xiaomi, Redmi or POCO phones, as well as solving typical problems from Bluetooth errors to malfunctions in the Mi Fitness application.

Contrast design, waterproof body and 14-day autonomy make the Mi Band 4C a great choice for athletes and active users, but to unlock the full potential of the device, it needs to be properly connected and configured. We will take all the steps from installing the application to synchronizing health data, and also explain how to avoid common errors that interfere with the stable operation of the bracelet.

If you've just unpacked the Mi Band 4C and want to get to use quickly, this guide will save you time, and if you don't, there's a section in the article that addresses 90 percent of the typical problems.

1. Preparation of Xiaomi smartphone to connect

Before pairing the Mi Band 4C, make sure that your smartphone meets the minimum requirements. The bracelet is compatible with devices on Android 5.0 and higher, but for stable operation, a version no lower than Android 7.0 is recommended. On Xiaomi phones with a MIUI shell, conflicts can arise due to energy optimization - we will also analyze them.

What to do before connecting:

• 📱 Update the operating system to the latest version (check in Settings) → The phone. → Updating the system).
• 🔄 Enable Bluetooth and geolocation (necessary to find the device).
• 🚫 Turn off power saving modes (they can block background work of the Mi Fitness app).
• 📲 Free up at least 100MB of memory – the bracelet app requires cache space.

Pay special attention to permissions: Mi Fitness will request access to contacts, notifications, physical activity and storage. Without these permissions, the bracelet will not be able to show incoming calls or synchronize step data.

2. Installation and configuration of the Mi Fitness application

The official Mi Band 4C management app is Mi Fitness (formerly Mi Fit), which can be downloaded from Google Play or AppGallery (for devices without Google services).

Step-by-step installation instructions:

1. Download Mi Fitness via the link (or via AppGallery on Huawei phones).
2. Launch the app and sign up through your Xiaomi account (or sign in if you already have an account).
3. Accept all permission requests (notifications, location, physical activity).
4. In the main menu, click Profile → Add Device → Bracelet → Mi Smart Band 4C.

Important! If you already have another Mi Band bracelet connected, remove it from the app first (Profile → Device → Untie). You can only connect one device at a time.

Xiaomi account is registered|The latest version of Mi Fitness is installed|Bluetooth and geolocation enabled|Power saving modes are turned off|Cleared cache memory of the application (in case of errors)-->

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

Now, to the interface process itself, follow the instructions carefully, and at this point, many users make errors that leave the bracelet undetectable.

Connection algorithm:

1. Charge the Mi Band 4C to at least 50% (charging indicator – flashing battery icon on the screen).
2. Turn on the bracelet by pressing the touch button below the screen. Wait for the Mi logo to appear.
3. In the Mi Fitness app, select Add Device → Mi Smart Band 4C.
4. Click Connect and wait until the phone finds the bracelet (it can take up to 30 seconds).
5. On the screen of the bracelet will appear 4-digit code - confirm it in the application.
6. Wait for the synchronization to be completed (progress will be displayed in the app).

If the bracelet is not present, try:

• 🔄 Reboot the Mi Band 4C (Press the touch button for 10 seconds).
• 📱 Reboot Mi Fitness and Bluetooth on your phone.
• 🚫 Remove the bracelet from the list of conjugate devices in the Bluetooth settings of the phone (Settings) → Bluetooth → Mi Band 4C → Forget the device).

4. Set up notifications and basic functions

Once you've successfully connected, we'll customize the Mi Band 4C to suit your needs.

• 📞 Notifications of calls and SMS (contact-name).
• 📱 Notifications from messengers (WhatsApp, Telegram, Viber, etc.).
• 🏃‍♂️ Tracking steps, distance and calories burned.
• ❤️ Monitoring of heart rate (manual or automatic).
• 🌙 Sleep control with phase analysis (deep, light, REM).

How to set up notifications:

1. In Mi Fitness, go to Profile → Mi Smart Band 4C → Notifications.
2. Turn on the Call Notification and Notifications from the apps switch.
3. Select the apps you want to see on your bracelet (e.g. Telegram or Gmail).
4. Set the time of inactivity – the bracelet will vibrate if you sit for a long time without movement.

Important: Xiaomi phones with MIUI 12+ must manually allow auto-start for Mi Fitness, otherwise notifications will not come. You can do this in Settings → Applications → Application Management → Mi Fitness → Auto-Start.

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To prevent the bracelet from discharging too quickly, turn off constant monitoring of heart rate in the settings. It is enough to measure the pulse manually or 1 time per hour.

5. Solving typical connection problems

Even if you follow the instructions correctly, you can get errors, and we've collected the TOP-5 problems and ways to solve them:

If none of the methods helped, try to reset the bracelet to the factory settings:

1. In Mi Fitness, go to Profile → Mi Smart Band 4C → Untie the device.
2. On the bracelet, press the touch button for 15 seconds until the Mi logo appears.
3. Repeat the connection procedure again.

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90% of Mi Band 4C connectivity problems are solved by rebooting the bracelet and phone, updating Mi Fitness, or resetting Bluetooth settings.

6. Firmware update and additional functions

Regular firmware updates add new features and fix bugs to check the relevance of the software:

1. Open Mi Fitness and go to Profile → Mi Smart Band 4C → Firmware Update.
2. If a new version is available, plug the bracelet into charging and wait for the update to complete (don’t turn it off the power!).

Hidden features of the Mi Band 4C:

• 🔍 Phone search: in the bracelet select More → Find the phone – the smartphone will begin to vibrate.
• 🌓 Night mode: turns off screen lighting at a given time (Settings) → Screen. → Night mode).
• 🏊 Swimming mode: activated manually before swimming for accurate distance tracking.
• 🔋 Charge saving: Disables all functions except time (turns on at low charge automatically).

For advanced users, informal firmware (such as Amazfit or Notify & Fitness) is available that extends functionality, but installing them requires experience and may be unwarranted.

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To extend the life of the Mi Band 4C battery, reduce the brightness of the screen to 2-3 divisions and turn off automatic heart rate monitoring.

7. Synchronization of data with other services

The Mi Band 4C can transfer health data to third-party apps such as Google Fit, Apple Health (for iPhone) or Strava.

1. In Mi Fitness, go to Profile → Settings → Data Synchronization.
2. Select a service (e.g. Google Fit) and log in.
3. Set up the synchronization frequency (recommended daily).

If the data is not synchronized:

• Check your Internet connection.
• Update the receiver app (e.g. Google Fit).
• Reconnect accounts in the Mi Fitness settings.

Important for Xiaomi users: if you use Mi Account to sync, the data is automatically stored in the cloud. To restore it on a new phone, you just need to log in to the same account.

8. Alternative ways of connecting (without Mi Fitness)

If the official Mi Fitness app doesn’t work (for example, due to regional restrictions), alternative methods can be used:

Method 1: Notify & Fitness

This third-party software supports Mi Band 4C and offers advanced notification settings. Download it from Google Play and follow the instructions in the app. Minus: some features (such as sleep monitoring) may not work well.

Method 2: Connecting through Amazfit

The Mi Band 4C is partially compatible with the Amazfit app (from the same manufacturer), but not all features will be available, and data synchronization can be delayed.

⚠️ Note: Use of informal applications can lead to malfunctions of the bracelet or loss of warranty.

FAQ: Frequent questions about Mi Band 4C