Synchronizing wearable electronics with a smartphone is the first and most important step to start fully using all the capabilities of the tracker. Owners of a popular model Xiaomi Mi Band 4 often encounter configuration nuances that may not seem obvious at first glance. Correct pairing of devices ensures stable transmission of data on heart rate, steps and sleep quality, and also guarantees timely receipt of notifications from instant messengers and calls.
The connection process requires preliminary preparation of both the gadget itself and the mobile device running the operating system. Android. Errors during the initialization stage may result in the bracelet not being able to see the phone, or data being transferred with a delay. In this article, we will analyze in detail the algorithm of actions that will eliminate most of the typical problems when creating a pair between devices.
It is worth considering that the Xiaomi ecosystem is constantly updated, and the software interface may differ slightly depending on the firmware version of the bracelet and the utility installed on the smartphone. Below is the current method, tested on most modern devices with the Android OS.
Preparing the device and checking compatibility
Before you try to connect gadgets, you need to make sure that your smartphone meets the minimum system requirements. The model Mi Band 4 works correctly with devices that have the version Android 4.4 and higher, as well as module support Bluetooth 4.0 or later. Most modern phones satisfy these conditions, but very old models may have difficulties with connection stability.
A critical point is charging the tracker itself. If the bracelet's battery level is critically low, it may not enter discovery mode or may turn off during setup. It is recommended to charge the device for at least 15-20 minutes before starting the procedure.
⚠️ Attention: Do not try to pair the bracelet through the standard Bluetooth menu in the phone settings. This will result in a connection error and the device will not transfer data to the application.
You should also check whether the bracelet is currently connected to another phone. The data transfer protocol does not allow the device to simultaneously service two active connections with different accounts. If you have previously used the tracker with another smartphone, you must first unlink it.
Installing and setting up the Mi Fit application
The central control element is the official application Mi Fit (in some regions it is known as Zepp Life). Software downloads should only be made from trusted sources, such as Google Play Market. Third-party APK files may contain outdated versions or malicious code that will disrupt the operation of Bluetooth drivers.
After installation, the application will require registration or logging into an existing account Xiaomi. Without authorization, data synchronization is impossible, since all statistics are stored in the manufacturer’s cloud storage. During the registration process, carefully fill out the information about your date of birth, height and weight - these parameters are used by algorithms to more accurately calculate calories burned and step length.
- 📱 Download the Mi Fit application from the official Google Play store.
- 📝 Register a new Xiaomi account or log in to an existing one.
- ⚙️ Grant the application all requested permissions to access geolocation, phone and memory.
- 🔋 Make sure that Bluetooth and the GPS module are turned on on your smartphone (for accurate route tracking).
It is important to give the utility permission to work in the background. Android power saving systems often aggressively close apps, causing the band to lose connection within a few hours of setup. In your phone's battery settings, find Mi Fit and select the option No restrictions or Autostart.
The process of pairing the bracelet with a smartphone
The main setup step takes place directly inside the application interface. After successfully logging into your account, go to the Profiletab, which is usually located in the lower right corner of the screen. Here you will see a section Add devicethat initiates a search for compatible gadgets within Bluetooth range.
Select a category from the list Bracelet and click on the icon Mi Band 4. The application will begin scanning the airwaves. At this moment, a vibration alert and a graphic symbol resembling a Bluetooth icon or an arrow should appear on the tracker screen. To confirm the connection, you need to touch the touch button on the bracelet.
☑️ Pairing checklist
The binding process may take from 10 to 30 seconds. During this time, do not move far from the phone and do not block the smartphone screen. After successful connection, the bracelet display will display the current time synchronized with the phone, and the main dashboard with zero or current activity indicators will appear in the application.
If the bracelet does not vibrate when searching, try rebooting it by connecting it to the charger for a couple of seconds, and then start searching again in the application.
Setting up notifications and monitoring functions
After successful connection, the user has access to flexible alert settings. By default, all notifications can be disabled, so they must be activated manually for each application of interest. Go to the bracelet profile menu inside Mi Fit and select Application notifications.
Here you will see a list of apps installed on your smartphone, such as Telegram, WhatsApp, Viber and system calls. Activate the switches next to the desired services. It is worth remembering that the bracelet only displays the notification text; Replying to a message or opening a link directly from the wrist on the 4th generation model is impossible due to limitations of the hardware platform.
| Function | Description of work | Setting requirements |
|---|---|---|
| Incoming calls | Vibration and the name of the contact person | Access to the phone book and call logs |
| SMS messages | Message text and sender number | Permission to read SMS in the Android system |
| Messengers | Notification text from applications | Activation of the switch in the Mi Fit application list |
| Calendar events | Meeting reminder 15 minutes in advance | Access to the calendar and system reminders |
The function Raise your wrist to turn on the screendeserves special attention. It allows you to activate the bracelet display by simply turning your hand, which is extremely convenient for quickly checking the time. However, this option consumes additional battery power, so its sensitivity can be adjusted or completely disabled in the display settings.
Solving connection and synchronization problems
Even if all instructions are followed, users may encounter a situation where devices do not see each other or the connection is constantly interrupted. Most often, the reason lies in a Bluetooth cache conflict or an aggressive smartphone energy saving policy. The first step should always be to completely reboot both devices.
If rebooting doesn't help, try clearing the Mi Fit app cache. To do this, go to Settings → Applications → Mi Fit → Memory and click the button Clear cache. Do not confuse this with clearing data, as the latter action will require re-authorization and setting up the bracelet from scratch.
⚠️ Attention: The permission settings interface may differ on smartphones from different manufacturers (Samsung, Xiaomi, Huawei). If notifications do not arrive, check the "Autostart" section in your phone settings.
In rare cases, resetting the bracelet itself to factory settings helps. On your device, go to menu More → Factory settings and confirm the action. After this, you will have to go through the pairing procedure again, as when you turned it on for the first time.
Hidden Bluetooth debugging mode
In some cases, enabling developer mode on Android helps. Go to settings, find "About phone" and click on "Build number" 7 times. Then, in the Developer Options menu, enable the Enable HCI Bluetooth Log option. This can stabilize the connection on older versions of Android.
Firmware update and device maintenance
The manufacturer regularly releases software updates for Mi Band 4that fix bugs, improve the accuracy of sensors and add new watch faces. The availability of a new version is checked automatically every time the bracelet is connected to the application.
If an update is available, a notification will appear at the top of the Mi Fit home screen. To install new firmware, make sure that the bracelet's battery charge is at least 20% and that the smartphone is nearby. The process may take several minutes, during which the tracker screen will go dark and a progress bar will be displayed on the phone.
Regular maintenance also includes cleaning the touch contacts on the back of the bracelet and charger. Oxidation or contamination of the contacts may result in the device not charging and, as a result, not turning on for pairing. Wipe the contacts with a dry soft cloth once a month.
Stable operation of the bracelet depends 80% on the correct energy saving settings of the smartphone and the availability of the current version of the Mi Fit application.
Why does the bracelet not see the phone when searching?
Most often the problem is that the device is already paired with another phone or connected via the Bluetooth system menu instead of the app. Also check if geolocation is enabled on your smartphone, since on Android 6.0+ this is a mandatory requirement for Bluetooth Low Energy to work.
Is it possible to connect Mi Band 4 to two phones at the same time?
No, the official firmware does not support multi-connection. The bracelet can only store data from one account. To switch between phones, you need to perform the unlinking procedure in the application on the first device and re-pairing on the second.
What to do if notifications from WhatsApp do not arrive?
Make sure that in the Mi Fit application in the notifications section the switch opposite WhatsApp is activated. In addition, check the settings of the messenger itself: notifications should be allowed in the Android system, and the application itself should not be limited in background work.
How to reset the bracelet if it is frozen?
Place the bracelet on the charger. In most cases, connecting to a power source will automatically reboot the system. If this does not help, leave it on charge until it is completely discharged, and then charge again.
Is the heart rate monitor on the Mi Band 4 accurate?
The optical sensor provides sufficient accuracy for household monitoring and amateur-level training. However, for professional sports purposes or medical monitoring of indicators, it may have an error, especially with intense movement or tattoos on the wrist.