Xiaomi Mi Band 4 is one of the most popular fitness bracelets on the market, combining affordable price, wide functionality and stylish design. Even years after the release, the device remains in demand due to stable operation, long autonomy and easy management. However, many users face difficulties when first meeting: how to connect the bracelet to the phone, adjust notifications, calibrate the pedometer or reset the device to factory settings?
In this guide, we’ll take you through all the key aspects of working with the Mi Band 4, from basic setup to hidden features that aren’t mentioned in the official manual. You’ll learn how to make the most of the bracelet for training, sleeping, health monitoring, and even managing a smart home. And if you’re just planning a purchase, at the end of this article, we’ll compare the Mi Band 4 to new models and help you decide whether to overpay for the upgraded versions.
Set and appearance: what is in the box and how not to confuse with a fake
The original Xiaomi Mi Band 4 comes in a compact white box with the brand logo. Inside you will find:
- 📦 The fitness bracelet itself with a strap installed (color depends on the version: standard black or limited editions)
- 🔋 Magnetic connector charging cable (important: original cable is marked Mi)
- 📄 Short instructions in several languages (including Russian)
Please note the details that will help distinguish the original from the fake:
- 🔍 On the back of the bracelet must be engraving with the serial number and logo Mi.
- 🎨 Screen. AMOLED with clear colors and deep black (fakes often dim) TFT-display)
- 🔋 The magnetic charging connector should be tightly attracted to the contacts of the bracelet
If you buy a wristband from hand or on a marketplace, check with the seller: the original devices are sold only in Xiaomi branded stores or from official distributors. Counterfeit products often have simplified software, unstable sensors and can cause harm to health (for example, due to poor-quality materials strap).
First Enablement and Connection to a Smartphone: Step-by-step Instructions
Before you use the Mi Band 4, you need to charge it to at least 20%.
- Connect the magnetic connector of the charging cable to the contacts on the back of the bracelet.
- Connect. USB-cable-connector (5V/1A) computer.
- Wait for the charging indicator (battery icon) to appear on the screen.
After charging, start connecting:
- Download the official Mi Fit app (available for Android and iOS).
If the bracelet is not present, try:
- 🔄 Reboot Mi Band 4 (press the touch button for 10 seconds)
- 📱 Reinstall the Mi Fit app and clear the cache
- 🔌 Connect to another smartphone to check the performance of the bracelet
☑️ Preparation for the first connection
Important: Mi Band 4 supports only one smartphone at a time. If you want to sync it with another phone, untie the bracelet in the Mi Fit settings first.
Set up the main functions: pedometer, notifications, alarm clocks
Once connected, customize the bracelet to your needs. Basic settings are available in the Mi Fit app.
| Function | How to set up | Advice |
|---|---|---|
| Stepper | Go to Profile. → Mi Smart Band 4 → Steps and set a day goal (8000-10,000 steps recommended) | Calibrate the step length manually for accuracy (measure 10 steps and enter the value in the settings) |
| Notifications | Profile → Mi Smart Band 4 → Notifications → Select the apps you want to see alerts from | Turn off unnecessary notifications (such as from games) to save charge |
| Alarm clocks | Profile → Mi Smart Band 4 → Alarm clocks → Add time and select the days of the week. | Use the function "Smart alarm" - the bracelet will wake you up in the phase of light sleep 30 minutes before the set time |
| Sleep monitoring | Profile → Mi Smart Band 4 → Son → set up automatic mode | For accuracy, wear the bracelet on the non-working hand and tighten the strap tighter. |
Some settings are available on the bracelet:
- 🕒 To change the dial, swipe up the screen and select More → Dials.
- 🔔 To quickly turn on the "Do not disturb" mode, press the touch button and select the appropriate icon.
- 🔦 To activate the screen light, simply raise your hand or touch the button.
💡
If the bracelet doesn’t vibrate at notifications, check the sound settings in Mi Fit: Sometimes the vibration turns off after the firmware update.
Health monitoring: pulse, sleep and blood oxygen levels
The Mi Band 4 is equipped with sensors to track key health indicators, and here's how to use them:
Pulse measurement:
- On the bracelet, select the menu More → Heart rate.
- Place your hand on a flat surface and do not move for 30 seconds.
- Wait for the result on the screen (normal pulse at rest: 60-100 beats per minute).
For automatic monitoring, enable the function in Mi Fit → Profile → Mi Smart Band 4 → Heart rate → Monitoring: Recommended intervals every 30 minutes.
Sleep analysis:
- 😴 The bracelet automatically detects sleep phases (deep, light, REM), if you wear it at night.
- 📊 Data is displayed in Mi Fit in the Sleep section with detailed statistics and tips for improvement.
- ⚠️ For accuracy, do not remove the bracelet before waking up and do not drink alcohol before going to bed - this distorts the readings.
Oxygen levels (SpO₂):
The feature is not available in all firmware, but if your bracelet supports it:
- Choose More. → SpO₂ bracelet.
- Put your hand on the table and do not move for 1-2 minutes.
- Normal: 95-100%. If it's below 90%, see your doctor.
How can we improve the accuracy of sensors?
Managing Music and Smart Home: Hidden Opportunities
Many users don’t know that the Mi Band 4 can work as a remote for music and Xiaomi Smart Home devices.
Music management:
- 🎵 While playing the track on the phone, swipe right on the bracelet screen.
- 🔀 There will be buttons: Play/Pause, Previous track, Next track.
- 📻 Works with most players: Spotify, YouTube Music, Apple Music.
Smart home management:
If you have Xiaomi devices (lamps, sockets, robot vacuum cleaner), they can be controlled directly from the bracelet:
- Open Mi Fit and go to Profile → Mi Smart Band 4 → Device management.
- Add the right gadgets (they must be connected to the same Xiaomi account).
- Now on the bracelet in the menu will also appear the item Smart home.
Example of teams:
- 💡 Turn on/off the Yeelight lamp.
- 🧹 Start cleaning with the robot vacuum cleaner Mi Robot Vacuum.
- ☕ Turn on the Mi Smart Kettle kettle.
💡
The Mi Band 4 can replace the smart home remote, but only if all devices are tied to a single Xiaomi account.
Update firmware and reset to factory settings
Regular firmware updates improve the stability of the Mi Band 4 and add new features.
- Make sure the battery is over 50%.
- Connect the bracelet to your phone via Mi Fit.
- Go to Profile → Mi Smart Band 4 → Update firmware.
- If a new version is available, click Update and wait until it is completed (don’t turn off Bluetooth!).
If the bracelet is glitching or not synchronizing, reset:
- On the bracelet, go to More → Settings → Reset.
- Confirm the action by clicking the tick.
- After reset, reconnect the bracelet via Mi Fit.
⚠️ Warning: Reset removes all data from the bracelet, including training statistics and dial settings. Pre-sync the data with the Mi Fit app to avoid losing activity history.
If after the update the bracelet stopped turning on:
- 🔌 Connect it to charging for 30 minutes - sometimes the firmware is installed in the background.
- 🔄 Try resetting by holding the touch button for 20 seconds.
- 📱 Reinstall Mi Fit and repeat the update procedure.
Comparison with new models: should we update?
The Mi Band 4 was released in 2019, but it still remains relevant due to its reliability and low price, but the new models have advantages:
| Model | Year of release | Key improvements | Price (2026) |
|---|---|---|---|
| Mi Band 4 | 2019 | AMOLED-screen, 20-day autonomy, basic sleep monitoring | 1,500 ₽ |
| Mi Band 5 | 2020 | Brighter screen, magnetic charging, stress monitoring, women's health | 2,200 ₽ |
| Mi Band 6 | 2021 | Large screen (1.56) with 30 training modes, SpO₂, fast-charging | 2,800 ₽ |
| Mi Band 7 | 2022 | 120 training modes, improved pulse sensor, always on screen | 3,500 ₽ |
Should we upgrade?
- ✅ Yes, if: You need a big screen, advanced health monitoring, or support for new sports.
- ❌ No, if: you only use the bracelet for pedometer, notifications and basic sleep tracking. Mi Band 4 does these tasks just as well.
Also keep in mind that new models require more frequent charging (the Mi Band 7 is up to 15 days off compared to 20 days on the Mi Band 4).
Frequent problems and their solutions
Even a reliable device like the Mi Band 4 sometimes fails, and here are the most common problems and ways to fix them:
The bracelet is not synchronized with the phone:
- 📱 Reboot your smartphone and bracelet.
- 🔄 In Mi Fit, untie the device and connect it again.
- 🛠️ Update the bracelet app and firmware.
The battery is fast running down:
- ⚡ Turn off constant pulse monitoring (leave only manual measurements).
- 🔔 Reduce the number of notifications.
- 🌙 Use dark dials – they save charge AMOLED-screen.
Improper pedometer:
- 👟 Calibrate the step length manually in Mi Fit.
- 🚶 Wear a bracelet on an unworking hand.
- 📏 Compare the readings with another device (such as a smartphone) and make corrections.
⚠️ Warning: If the bracelet has stopped responding to touch, check if moisture has come under the screen. Mi Band 4 has 5 protection ATM, But prolonged exposure to water (such as swimming in a pool) can damage the sensor.