Modern wearables like the Xiaomi Mi Band 4 are complex miniature computers that, like any smart appliance, can malfunction. Users often face situations where the tracker stops responding to touch, the screen goes out or the device stops syncing with the smartphone.
Many owners mistakenly believe that to resuscitate the device, you need to look for hidden hardware buttons or disassemble the case, which is strictly forbidden. In fact, the software architecture of the fitness bracelet does not provide a physical button on, and all control is carried out through the touch screen and software algorithms. Understanding the principles of operation of the Mi Band 4 will help to avoid panic and unnecessary actions.
In this article, we will take a look at all the ways you can restore your gadget to work, how to do a soft reset, what to do when you completely lock the interface, and when you need to delete the data completely. The only way to restart the hardware is to completely drain the battery to zero, which will save you time and nerves when you have technical difficulties.
Reasons for the incorrect work of a fitness tracker
Before we go into active recovery, we need to understand the nature of the malfunction that has occurred. Software failure in the tracker can be caused by many factors, from the banal overflow of memory with temporary files to conflicting firmware versions. Often the device simply gets stuck in the task cycle and stops responding to external commands.
One common reason is that the sync session with the smartphone is not properly terminated. If the connection was interrupted when the data is updated or a new dial is installed, the bracelet operating system may go into a standby state that visually looks like a shutdown, and background processes that consume CPU resources can also cause problems.
The physical condition of the battery should be considered, as lithium polymer batteries degrade over time, and power surges can lead to sudden shutdowns or freezes, and if your gadget has been working for several years, such symptoms may indicate wear and tear of the battery.
The method of soft reboot through the menu
The safest and most recommended way to restore normal operation is to use a regular software menu, which is similar to rebooting a smartphone through settings and does not result in loss of accumulated statistics or resetting user data. First, make sure that the battery is at least 10-15%.
Activate the tracker screen with a swipe or wrist lift. If the sensor responds, swipe left until the main icon menu appears. You need to find the section marked by the gear icon that is responsible for the system settings of the device. Inside this section, you should look for the item associated with the system or general control.
Depending on the version of the firmware installed, the path may vary slightly, but the logic remains the same. Select System, then find Reboot or Shutdown, confirm the action by tapping the touch area, the device vibrates and in a few seconds it will turn on again.
- 🔄 Swipe left to open the main menu.
- ⚙️ Find the Settings icon (cog) in the list of applications.
- 🔌 Select "System" or "Reboot" immediately".
- ✅ Confirm the action by touching the screen to start the process.
If the standard path through settings is not available, try the alternative option through the "More" menu. Sometimes the system management functions are hidden in additional tabs to save space on the screen, the main thing is not to panic and consistently check all available menu items.
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Before you perform a software reboot via the menu, make sure that the bracelet is not in Do Not Disturb mode, as in this mode some interface elements may be hidden or inactive.
Forced restart when getting stuck
When the screen goes out, but the device does not respond to touch or charger connection, it requires more drastic measures. This condition is often called the “soft brick” when the operating system is getting stuck in a critical error. Since there is no physical reset button on the Xiaomi Mi Band 4 body, manufacturers have implemented a software disaster recovery mechanism.
The idea is to simulate a full battery discharge, so you need to plug the bracelet into the charger and wait until the battery runs out of life. However, there's a faster way that often works better: try plugging the tracker into charging, then without turning off the cable, pinch the touch area (if it reacts in any way) or just leave it alone.
The most effective method for a fully locked device is to wait. Leave the bracelet connected to charging for a few hours. The power management system can independently initiate a reboot when a certain level of charge is reached or, conversely, at a critical discharge.
⚠️ Warning: Do not attempt to disassemble the bracelet body or close contacts on the reset board, which will lead to irreversible damage to the water protection and loss of warranty.
If the standard charging connection doesn't help, try changing the power source. USB-Instead of charging heavily from a smartphone, the port of the computer sometimes causes the power controller to behave differently and initiate a boot cycle. 5-10 successively.
☑️ Checklist of actions when hanging
Full reset to factory settings
If a soft reboot doesn’t work and the device is unstable, a radical measure may be needed – a hard reset – that removes all user data, settings, stored activity and pairings, returning the tracker to the state it was in when you bought it, an extreme measure that should only be resorted to if you have serious software errors.
There are two ways to reset, one is through the menu of the bracelet itself, if available, and find Reset or Unbind in the settings, the other is through the Mi Fit (or Zepp Life) app on your smartphone, which is preferable because it ensures that the Bluetooth connection is properly broken.
To reset through the app, open your device profile in the list of gadgets. Scroll down to the bottom and find the Unbind button. Once confirmed, the bracelet will automatically clear the memory and reboot. All data synced to the cloud up to that point will be stored in the account.
| Parameter | Soft reset | Full reset (Hard Reset) |
|---|---|---|
| Data retention | Yes, all data is saved. | No, the data is deleted. |
| Implementation time | 30-60 seconds. | 2-5 minutes |
| Impact on firmware | It doesn't. | Resets configuration settings |
| The need for a PC | Not required | Not required |
Once you've done the full reset, you need to re-do the pairing process with your smartphone. Open the app, click Add Device, and follow the instructions on the screen. Old steps and pulse data for the current day can be lost if they haven't synchronized before the procedure.
What happens to the data when it is reset?
Reinstallation of firmware as a method of treatment
A common cause of wearable device instability is operating system file corruption, which can be due to an interrupted update, a Bluetooth connection failure during data transfer, or an error in the companion application itself, in which case a simple reboot will not fix the damaged memory sectors.
The solution is to force firmware reinstallation. Open the Zepp Life app (formerly Mi Fit), go to the bracelet profile and find the Check for updates section. Even if the system says that the latest version is installed, try to initiate the update process manually.
The app will re-download the firmware package and install it on top of the existing system, replacing damaged files with working copies. During this process, it is critical not to disconnect the bracelet from the phone and keep the smartphone screen active.
- 📱 Make sure your smartphone is connected to stable Wi-Fi.
- 🔋 The bracelet must be at least 50% charged before starting.
- 📡 Keep your phone and bracelet in close proximity (up to 1 meter).
- ⏳ Do not leave the application during the update process.
If the automatic update doesn’t start, you can try uninstalling the app and installing it again by clearing the Bluetooth cache in your Android settings, which often helps shake up services that communicate with external devices.
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Reinstallation of firmware is the most reliable software method to fix system errors without having to replace the device, as it completely restores the integrity of system files.
Charging problems and their impact on the launch
Sometimes the problem of "non-switching" is not the software, but the banal lack of contact of charging pins. On the back of the Xiaomi Mi Band 4 there are two golden contacts that over time oxidize or become contaminated with sweat and dirt, which prevents normal energy flow, and the device can not start the boot process.
Carefully inspect the contacts on the tracker and on the charging cable. If you notice dark spots or plaque, gently wipe them with a dry soft cloth or cotton swab slightly soaked in alcohol. After cleaning, be sure to let the contacts dry for 2-3 minutes before connecting to the network.
Also worth checking is the charging cable itself. The contacts on the cable may be inflated or not elastic enough. Try bending them slightly (very carefully!) or pressing the tracker to charge with your finger when you connect to make sure there is contact. The charge indicator (battery icon) should appear on the screen instantly.
⚠️ Attention: Using damaged or unoriginal charging cables with inadequate voltage can render the power controller inoperable.Use only proven accessories.
If the bracelet still shows no signs of life after cleaning the contacts and using another cable, a deep battery discharge may have occurred, in which case leave the device on charge for 30-40 minutes, even if the screen remains black. Lithium batteries sometimes require time to "rock" before turning on the screen.