Xiaomi Mi Band 3 is one of the most popular fitness bracelets on the market, combining affordable price, compact design and wide functionality. Even years after its release, the device does not lose its relevance due to stable operation, long autonomy and support for basic functions for health monitoring. However, many users use the bracelet only 30% of its capabilities, limited to basic functions like pedometer and alarm clock.
In this guide, we’ll take you through all aspects of working with the Mi Band 3, from the first smartphone connection to hidden features that aren’t covered in the standard manual. You’ll learn how to wear a wristband to accurately measure your heart rate, customize notifications to your needs, save battery life, and even use a smart home control device. And if you’re just planning a purchase, at the end of the article, there’s a comparison to the new Mi Band series to see if you should overpay for an updated version.
Preparation for the first use: unpacking and charging
Before the first inclusion of the Mi Band 3 You have to do a few simple steps. Start by unpacking the kit, and in the box you'll find the bracelet itself, the charging cable (magnetic connector) and a brief instruction in several languages. Note that the charging cable is not universal, it's only suitable for Mi Band models. 3/4 It is not compatible with newer versions.
Charging the device has its nuances:
- 🔋 Connect the magnetic connector to the back of the bracelet, it attracts automatically.
- ⚡ Use the power adapter with the output 5V/1A (Charging from a smartphone is fine. Charging from a smartphone. USB-The computer port can take up to 3 hours.
- 🕒 The full charging cycle takes about 2 hours. The indicator on the bracelet screen will show progress (the battery is filling).
- 🚫 Do not leave the bracelet on charge for more than 4 hours – this can reduce the battery life.
After charging, tap the touch button below the screen to turn on the bracelet. The Mi logo will appear on the display, followed by the main menu. If the screen doesn't respond, check the density of the cable or try rebooting the device by holding the 10 second button.
Connect to a smartphone and setup via Mi Fit
To fully work, the Mi Band 3 must be connected to the smartphone through the official Mi Fit app (available for Android and iOS). Download it from the App Store or Google Play and follow the instructions:
- Sign up or sign in to an existing Xiaomi account (you can use Google or Facebook).
- Click Profile → Add Device → Bracelet → Mi Smart Band 3.
- Allow the application to access notifications, geolocation, and contacts (necessary for the functions to function properly).
- Turn on Bluetooth on your smartphone and wait for the app to find the bracelet. The Mi Band 3 screen will show a confirmation code — compare it to what is shown in the app.
After successful synchronization, the app will offer to update the firmware of the bracelet, update to the latest version is mandatory - it corrects errors with the calculation of steps and the operation of the pulsemeter in the firmware versions below 1.6.0.14. The process will take 5-10 minutes, do not interrupt the connection to the bracelet.
Download the latest firmware|Set up personal data (height, weight, age)|Activate notifications|Synchronize time-->
If the bracelet is not connected:
- 🔄 Reboot both the bracelet and the smartphone.
- 📱 Make sure your phone is Bluetooth 4.0 enabled.+ (Older models may not be supported).
- 🚫 Turn off energy saving mode – it can block background synchronization.
Main functions and management of the bracelet
Mi Band 3 is controlled by a touch button under the screen and gestures.
- 👆 Screen swiping up/down – swipe across the screen.
- 🔙 Return to the main menu – press the button.
- 🔄 Switching between modes (training, pulse, weather) – hold the button for 2 seconds.
The main screen displays the time, date, battery charge and step count. To see more data, scroll down the screen:
| Screen. | Displayed information | How to activate |
|---|---|---|
| Steps/distance | Number of steps, kilometers traveled, calories burned | Swipe down 1 time |
| Pulse. | Current heart rate (HR) | Swipe down 2 times → choice of pulse mode" |
| Training. | Timer, type of activity (walking, running, cycling) | Holding the button → selection “Training" |
| Weather. | Temperature, humidity (data from the phone) | Swipe up from the main screen |
To measure your heart rate accurately, wear a wristband 2-3 fingers above your wrist (not too tight, but not loose either). Measuring your heart rate manually (via the wristband menu) gives you more accurate results than automatic monitoring. To enable constant heart rate tracking, go to Mi Fit. → Device profile → Heart rate settings → Measurement frequency and select interval (e.g. every 5 minutes).
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If the bracelet does not measure the pulse, check the density of the skin fitting and clean the sensor on the back of the sweat or cream with an alcohol wipe.
Set up notifications and alarm clocks
One of the most useful features of the Mi Band 3 is call and message alerts, to set up notifications:
- Open Mi Fit and go to Profile → Mi Smart Band 3 → Notifications.
- Turn on the "Notification" switch.
- Select the apps you want to see on your bracelet (for example, WhatsApp, Telegram, Gmail).
- Set up a vibration style (short/long) and repeat alerts.
For calls, the bracelet vibrates and displays the number of the incoming person. You can reject the call by pressing the bracelet button (the feature works only on Android). On the iPhone, you can only view the number.
The alarm clocks are set separately:
- ⏰ Annex: Profile → Alarm clocks → Add an alarm clock. You can create up to 10 signals.
- 🛌 On the bracelet: hold the button → "More" → "Alarm clock. You can turn on/off vibrations here.
- 🔕 To turn off the alarm clock, tap the bracelet screen or press the button.
How to turn off notifications during sleep?
If notifications do not arrive:
⚠️ Attention: On Android 10+ Check if Mi Fit is allowed to run in the background. → Annexes → Mi Fit → Battery → Background activity and turn on the option.
Sleep and activity tracking: how to get accurate data
Mi Band 3 automatically recognizes sleep phases (deep, light, wakefulness), but for accurate data you need to follow a few rules:
- 🛏️ Put the bracelet on the right hand (for right-handers – on the left, for left-handers – on the right hand).
- 🕘 Go to bed at the same time – the bracelet algorithm adapts to your mode.
- 📵 Turn off night notifications or activate the "Do Not Disturb" mode".
- 🔋 Charge the bracelet to 100% before bedtime – at a charge level below 20%, sleep tracking is turned off.
In the morning, the Mi Fit app will have a report with a sleep schedule, wake time, and recommendations, and if the data seems inaccurate (e.g., a bracelet that captures wakefulness while you were asleep), try:
- 🔄 Recalibrate sensors: in Mi Fit go to Profile → Settings → Sleep data reset.
- 🛠️ Update the bracelet to the latest version.
- 📊 Manually edit the sleep time in the app (long tap on the chart).
To track activity, the bracelet supports 5 training regimens:
- 🏃 Running (outside or on a treadmill).
- 🚴 Cycling.
- 🏊 Swimming (bracelet waterproof up to 50 meters).
- 🚶 Walking.
- 🏋️ General training (for classes in the hall).
To start your workout, hold the button on your bracelet, select the activity type and confirm the start. Once completed, the data is automatically synchronized with Mi Fit, where you can see the route (if it was turned on). GPS phone, average heart rate and burned calories.
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For accurate calorie count, enter your real weight, height and age into Mi Fit, and without that data, the margin of error could be as high as 30 percent.
Advanced Features: Music Management, Phone Search, and Smart Home
Few people know, but the Mi Band 3 is not only able to count steps, but here are the hidden features of the device:
Music management:
- 🎵 While playing the track on your phone, swipe down on the bracelet to the music screen.
- 🔀 Press the button to pause the track or switch it.
- 📻 Works with Spotify, Apple Music, YouTube Music and the standard player.
Phone search:
- 📱 In the bracelet menu, select "Find the phone".
- 🔔 The phone will give a loud signal, even if it is silent.
- 🔍 The function operates within a radius of up to 10 meters (depending on obstacles).
Integration with a smart home:
- 🏠 Supports management of Xiaomi Mi Home devices (lamps, sockets, robot vacuum cleaners).
- 🔌 For example, you can set up a double press on the bracelet button to turn on the lights.
- 🔧 To set up, go to Mi Fit → Profile → Smart home management.
Another useful feature is "Raising your hand to activate the screen."
- Open Mi Fit and go to bracelet settings.
- Select the Display. → Raising your hand to activate.
- Set your sensitivity (average value is recommended).
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If the bracelet screen turns on too often (for example, when you wave your hand), reduce the sensitivity of the motion sensor in the settings.
How to save battery power and extend the life of the bracelet
The average lifetime of the Mi Band 3 on a single charge is 15-20 days, but when used actively (constant pulse, notifications, training) it is reduced to 7-10 days.
| Function | Impact on the battery | Recommendation |
|---|---|---|
| Continuous monitoring of pulse | High (up to 30% charge per day) | Set a measurement interval of 30 minutes or turn off automatic mode |
| Notifications | Average (5-10% per day) | Disable unnecessary apps (such as games or social media) |
| Screenlighting | Low (1-2% per day) | Reduce the lighting time to 5 seconds |
| Synchronization with Mi Home | High (with frequent use) | Turn it off if you don’t use a smart home. |
Additional savings tips:
- 🌙 Activate Do Not Disturb at night – this turns off vibration and backlight.
- 🔄 Update your firmware only through Mi Fit, not manually (this prevents battery draining errors).
- 🛁 Avoid getting soap or shampoo on the bracelet – they can damage the waterproof coating.
If the bracelet is discharged in 1-2 days, check:
⚠️ Warning: Possible causes of rapid discharge are a damaged battery (bloating of the body), constant synchronization with the phone (check background Mi Fit activity), or a firmware failure. Try resetting the bracelet to factory settings: in Mi Fit go to Profile → Untie the device.
Comparison with new models: should we update?
Despite its age, the Mi Band 3 remains a relevant device, but the new models have advantages:
| Model | Advantages | Deficiencies | Price (2026) |
|---|---|---|---|
| Mi Band 3 | Low price, reliability, water resistance | Monochrome screen, no SpO₂ | 1 500–2 000 ₽ |
| Mi Band 4 | Colored AMOLED-screen, support for swimming styles | Autonomy is lower (up to 14 days) | 2 000–2 500 ₽ |
| Mi Band 5/6 | Measurement SpO₂, stress, more exercise regimes | High price, less autonomy | 2 500–4 000 ₽ |
| Mi Band 7 | 120+ Exercise modes, always on screen | Weak water resistance (5) ATM 50m) | 3 500–4 500 ₽ |
You should update if you are missing:
- 🩺 Blood oxygen measurements (SpO₂) — relevant to health control COVID-19 sleep apnea.
- 🎨 Color screen – Mi Band 3 has a monochrome display with low contrast in the sun.
- 🏊♂️ Swimming style recognition – in Mi Band 3, swimming is counted as a common activity.
If you only need basic features (stepper, pulse, notifications), the Mi Band 3 remains the best choice for price/quality, especially since many of the advanced features of new models (such as stress assessment) work with a large margin of error and are more marketing in nature.