The Xiaomi Mi Band is one of the most reliable wearables on the market, but even the most stable electronics sometimes fail: the screen goes out, the sensor stops responding to touch, or the activity tracker stops synchronizing data with the smartphone. At such moments, the user needs to know how to correctly perform a forced reboot to return the gadget to work without losing accumulated statistics.
Unlike smartphones, the fitness bracelet doesn’t have a physical power button to pinch to turn off.The entire control process is tied to the touch screen and software algorithms, which creates certain difficulties when the system freezes. Understanding the architecture of the Mi Band 4 will help you choose the right method of resuscitation of the device, whether it is a standard software reset or a deeper memory cleanup.
In this article, we will take a look at all the existing ways to reboot the tracker, from standard methods through the application to emergency measures when the interface is completely blocked. You will learn how a normal shutdown differs from a complete reset, and in which situations you should resort to radical measures. It is important to understand that a regular reboot does not delete your training data if it is already synchronized with the Mi Fit cloud.
Staff reboot through the device menu
The easiest and safest way to update the tracker system is to use a built-in menu, which is suitable for situations where the touch screen responds to touch, but the device is not working correctly, for example, slowly switches the screens or does not show notifications.
Once you activate the display, swipe your finger across the screen to the right until you find More, and this section hides the System button, which contains the Reboot option, and tapping it initiates a soft restart of the RTOS operating system that controls the bracelet, and the screen goes out, and in a few seconds the Xiaomi logo will appear, signaling the start.
It's worth noting that this method is not the equivalent of a full factory reset, but only updates the current state of RAM and restarts the background processes. If the bracelet is dead and the sensor does not respond, this method will be useless, since you simply can not get into the settings menu.
Why can the bracelet hang?
Forced reboot via Mi Fit app
If the interface on the tracker itself is locked, a smartphone comes to the rescue. Mi Fit (or Zepp) has advanced connected device management features that allow you to send system commands directly to the wristband. This is the most effective method when the screen goes out, but the device continues to vibrate when notifications are received.
Open the app on your smartphone and make sure the bracelet is connected. Go to the device profile, scroll down the list of options and find Settings or Profile. In some versions of the interface, the reboot function is hidden in the "Advanced" section. Pressing the appropriate button will send a command to a forced restart.
It is important to follow the sequence of actions so that the team reaches the addressee:
- 📱 Make sure that the Bluetooth on your phone is on and active.
- 🔄 Check that the Mi Fit app is running and not rolled into the background.
- 🔋 Make sure that the battery charge of the bracelet is at least 10-15%.
- 📶 You are no longer at a distance. 1-2 Meters from a smartphone for a stable connection.
Sometimes the command may fail the first time because of loss of data packets over Bluetooth, in which case, try turning off and re-enable Bluetooth on your smartphone, wait for re-pairing and repeat the procedure, and if that doesn't help, you may need to intervene more deeply in the connection settings.
☑️ Pre-reset check
Battery discharge method as an emergency restart method
In situations where the fitness tracker is so stuck that it doesn't respond to touch or smartphone commands, the only effective method is to completely drain the battery, often called "hard reset via battery," and it's based on physically shutting down the power of the device.
The idea is simple: leave the bracelet alone and wait until the battery runs out completely and the device shuts down. Once the screen goes out and no longer responds even to the charger connection (the charging indicator won't light up immediately), leave it lying down for a few more hours. Then plug the tracker into the USB charger and wait for the logo to appear.
This process can take anywhere from 1 to 3 days depending on the residual charge and battery status. Although the method seems archaic, it allows you to release static electricity and forcefully stop all the hanging processes of the core of the system. Once turned on, the bracelet often starts to work as new, however, all unsaved data from the last synchronization will be lost.
⚠️ Warning: Do not attempt to speed up discharge by placing the device in the cold or heating it.Extreme temperatures can irreversibly damage the lithium polymer battery, resulting in battery bloating or total loss of capacity.
Uncoupling and re-connecting of the device
Often the problem isn't the device itself, but rather the sync error or profile conflict. If the bracelet is working but the data isn't being transmitted, or it's behaving unpredictably, the detachment procedure can help. This action breaks the logical link between the device and the Xiaomi account, clearing the pairing cache.
To do this, open the Mi Fit app, go to the bracelet profile and scroll to the bottom of the list, and you'll find the Unbind button, and once confirmed, the bracelet will go back to standby mode, displaying the bracelet. QR-code or waiting for a search. You will need to re-add the device through the "Profile" menu» → «Add the device».
During the reconfiguration process, the system will suggest updating the firmware if a new version is available. This is a great time to install the current firmware, since developers often release patches that fix known stability bugs. The update process can take from 5 to 15 minutes, during which the screen of the bracelet will burn and the phone should be nearby.
Comparison of reset and discharge methods
To make it easier for you to navigate the methods of restoring the functionality of the gadget, we have prepared a comparison table that will help you choose the optimal algorithm for actions depending on the symptoms of malfunctioning your Mi Band 4.
| Method | Data retention | Screen status required | Difficulty |
|---|---|---|---|
| Through the wristband menu | Complete. | It's working. | Low. |
| Through the Mi Fit app | Complete. | Not required | Low. |
| Uncoupling of the device | Full (in the cloud) | Not required | Medium |
| Complete discharge. | Partial (synced only) | Not required | High (long) |
As you can see from the table, the methods vary in the degree of impact on the system. If the screen is working, always start with the device menu. If the screen is black, but there is a vibration, use the application. Only as a last resort, use discharging, as it takes a long time and carries the risk of losing fresh training data.
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The choice of method depends on the sensor reaction: if the screen is alive, use the menu, if the meter is an application or discharge.
Frequent problems after reboot and their solution
After a successful reboot, the user may find that some functions are not working correctly, such as time, stop working pulsemeter or disappear the ability to display notifications, most often due to the fact that the background services of the smartphone operating system block the Mi Fit application to save energy.
You need to check the permission settings for the app on your phone. In the Battery or Applications section, find Mi Fit and set the "No Limits" or "Out-Start" mode, and make sure that the Bluetooth settings in the Connected Devices section for your bracelet activate the "Calls" and "Data Sharing" options.
If the bracelet continues to behave strangely after all the manipulations, perhaps the problem is hardware in nature, vibration can be a sign of short circuit in the circuit of the vibrator, and constant reboots can be a symptom of battery degradation or damage to the power controller, in which cases software methods are powerless.
⚠️ Note: If the bracelet shows Chinese characters instead of Russian or English after the reboot, it means that you have purchased a version for the domestic market of China. You can not change the language to a global software, you need to reflash, which is difficult and risky.
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To extend the life of the Mi Band 4 battery, turn off constant heart rate monitoring (leave the measurement once every 10-30 minutes) and reduce the brightness of the screen to a minimum.
Prevention of hangings and care of the system
To avoid the need for frequent reboots, you should follow simple rules for using wearable electronics. Periodically, at least once a week, synchronize data by opening the application, which allows you to clear the internal memory buffer of the tracker from old notifications and error logs.
Watch out for firmware updates. Xiaomi engineers regularly release patches that improve the stability of the Bluetooth stack and optimize power consumption. Ignoring updates can lead to a buildup of software errors that will eventually cause a critical system failure.
Also, don't overload the device. Although the Mi Band 4 supports dial installation, using too complex and heavy graphical interfaces can slow down the processor. If you notice a slowdown, go back to the standard dial and check if the problem has gone away.