The Xiaomi Mi Smart Band 4C fitness bracelet is a popular activity, sleep and health tracking device, but even with a simple device like this, beginners have questions when they first turn on, and this article will help them figure out how to properly activate the bracelet, connect it to a smartphone, and avoid typical errors.
Many users mistakenly think that it is enough to simply charge the device and press a button, but in fact, the process involves several important steps, from checking the battery charge to syncing with the Mi Fitness app, we will detail each step to make your Mi Band 4C work the first time.
Preparation of the bracelet for the first inclusion
Before you turn on Xiaomi Mi Smart Band 4C, Make sure the device is fully charged. There's a special magnetic-connector charging cable in the package. USB-computer port or power adapter (5V/1A).
The charging indicator on the bracelet screen should turn red. It takes about 1.5-2 hours to fully charge. When the battery is 100% charged, the indicator will go out, and the full charge icon will appear on the screen. Don't turn off the cable immediately - let the bracelet stand on charging for another 5-10 minutes to stabilize.
- 🔋 Check that the charging cable is tightly magnetized to the contacts on the back of the bracelet.
- 📱 Prepare a smartphone with the Mi Fitness app installed (available for Android and iOS).
- 🔄 Make sure your phone is Bluetooth enabled and notifications are allowed for the app.
If the bracelet does not respond to charging, try to clean the contacts of dust or dirt with a soft napkin. Also check if the cable is damaged - sometimes the problem lies in the cliff wires inside.
How to physically turn on the Mi Smart Band 4C
When the bracelet is charged, you can start turning on. Press and hold the touch button under the screen for 3-5 seconds. You will feel a slight vibration, and the Mi logo will appear on the display. This means that the device has started to boot.
If the screen is not responding, try the following:
- Make sure that the bracelet is charged at least 20% (with a lower charge, it may not turn on).
- Check if the screen is locked – sometimes just touching it is enough to unlock it.
- If the bracelet still does not turn on, connect it to charging for 10-15 minutes and try again.
Once successfully enabled, the screen will display a main time menu (if it is already set up) or a welcome message. If there is no time, it is normal – it will sync later through the app.
☑️ Preparation for first inclusion
Installation and configuration of the Mi Fitness application
Without the Mi Fitness app, the bracelet won't work properly.
- 🤖 Google Play for Android
- 🍎 App Store for iOS
After installation:
- Open the app and sign up (or sign in via your Xiaomi, Google, Facebook account).
- Click Profile → Add Device → Bracelet → Mi Smart Band 4C
- Follow the instructions on the screen to connect the bracelet via Bluetooth.
If the app does not find the bracelet, make sure that:
- 📶 Bluetooth is enabled and the device is within 1 meter radius of the phone.
- 🔄 The bracelet activated pairing mode (this may require a reboot).
- 📱 There's no active phone on it. VPN or firewalls blocking the connection.
💡
If Mi Fitness can't see the bracelet, try restarting both devices and re-pairing, sometimes removing the bracelet from the Bluetooth device list in your phone's settings helps.
Synchronization of the bracelet with the phone
Once successfully connected, the app will prompt you to update the bracelet firmware, and the update is mandatory — without it, some functions (such as tracking sleep or notifications) may not work correctly. The process takes 5-10 minutes, do not interrupt it or turn off Bluetooth.
Next, set up the main parameters:
| Parameter | Recommended settings | Why do you need it? |
|---|---|---|
| Time zone | Automatically (by phone) | For correct time and statistics |
| Units of measurement | Metric system (km, kg) | For accurate calculation of steps and distance |
| Notifications | Turn on for calls and messages | To receive alerts on the bracelet |
| Sleep tracking | Automatic (from 22:00 to 8:00) | To analyze sleep quality |
Be sure to set personal data on your profile: height, weight, age and gender, which is necessary for accurate calorie count and activity recommendations.
What to do if the synchronization is suspended?
Screen and interface setting
The Mi Smart Band 4C has a touchscreen that supports gestures.
- 🕒 Order of dials (touch the screen longer) → Change the dial).
- 🔍 Brightness of the screen (in bracelet settings through the application).
- 🔔 Vibration at notifications (strong/weak/off).
To unlock the screen, simply touch it or raise your hand (if the Activation Up feature is enabled). To return to the main menu, swipe left or right.
If the screen does not respond to touch, check:
- 🧼 Clean display (sweat or dirt may interfere with the sensor).
- 🔋 Charge level (at low battery, sensor may work worse).
- ⚙️ Sensitivity settings in the application (Bracelet settings) → Display).
💡
The “Lift to Activate” function saves battery life significantly, as the screen is turned on only when necessary.
Solving common problems in the first inclusion
Even with the right actions, there can be difficulties, and here are the most common ones and ways to eliminate them:
⚠️ Warning: If the bracelet doesn’t turn on after long storage, keep it charging for at least 30 minutes – sometimes the battery discharges to such a level that it takes time for the controller to “wake up.
| Problem. | Possible cause | Decision |
|---|---|---|
| The bracelet is off. | Battery discharged | Charge 2 hours, then try to turn on |
| Not connecting to the phone. | Outdated firmware | Update the software through Mi Fitness |
| The screen doesn't respond to touch. | Sensor contamination | Wipe the screen with an alcohol napkin |
| The wrong time. | Time zone not synchronized | Check the settings in Mi Fitness |
If none of these methods worked, try resetting the bracelet to factory settings.
- Open the bracelet settings in the app.
- Select additionally → Resetting settings.
- Confirm the action and wait for the reboot.
⚠️ Warning: Reset will delete all data from the bracelet, including activity statistics. backups in Mi Fitness will be retained.
Additional functions and advice on use
After successful configuration, useful functions can be activated:
- 🏃 Training Tracking: Running, walking, cycling, swimming (bracelet waterproof up to 50 meters).
- ❤️ Heart Monitoring: Enable automatic pulse measurement in settings.
- 😴 Sleep analysis: Bracelet recognizes deep and superficial sleep phases.
- 🔔 Alarm clock: You can set the vibration alarm right on the bracelet.
To extend the battery life:
- Turn off the permanent display of time (if not necessary).
- Reduce the frequency of automatic pulse measurement.
- Use dark dials (AMOLED-The screen consumes less energy).
Don’t forget to update your firmware regularly through Mi Fitness, which improves stability and adds new features.