Modern fitness trackers are complex computer devices that, like any gadget, can encounter software glitches.If your Xiaomi Mi Band 4 stopped responding to touch, stopped syncing with your smartphone, or just shows a black screen, this does not necessarily mean a breakdown.In most cases, the problem is solved by simply restarting the system or resetting to factory settings.
In this article, we will take a look at all the available ways to restart the tracker, from standard methods through the app to emergency measures. You will learn how to force the device to turn on if it “sleeps” and how to correctly perform a data reset to bring the gadget back to life. Remember, a full reset will delete all unsaved training data if the synchronization was not performed.
It's important to understand the difference between a normal reboot and a full reset. The first option simply turns off and turns on the device, saving your settings and data, while the second option returns the tracker to the "out of the box" state that is required when selling a device or if there are serious software errors.
Staff reboot via the Mi Fit app
The safest and most correct way to reboot the tracker is to use the official Mi Fit (or Zepp Life) app, which allows you to perform a software restart without losing data or settings. First, make sure your smartphone is in Bluetooth range and is linked to the bracelet.
Open the app on your phone and go to your device profile, usually by clicking on your Mi Band 4 image at the bottom of the screen or in the Profile tab, and you need to find the device management menu where important system functions are hidden.
- 📱 Click on your bracelet icon in the Mi Fit app.
- 🔄 Find the “Unbind” or “Ununbind” item at the bottom of the settings list.
- ✅ Confirm the action, after which the tracker will automatically restart.
Once unset, the bracelet will flash and restart, which is an action that breaks the connection and initiates a soft restart of the system, and if your goal is just to update the connection, you'll need to re-add the device to the app through the search for new gadgets.
⚠️ Attention: Unbind is the standard method of resetting the connection. Don't be afraid if the data stops being displayed temporarily after that - after re-synchronization, all statistics will be restored from the cloud or the memory of the phone.
Some users prefer not to untie the device completely, but to look for a hidden reboot menu. However, in the standard Mi Fit interface, the Reboot button is often absent, so the untie method remains the most effective for software reboot without physically affecting the device.
Forced reset and charging
If the software methods are not working or the device screen is out and does not respond to touch, you need to use the forced charging method. The architecture of the power controller in the Mi Band 4 is designed so that connecting to the charger often initiates a hardware reset of the system.
You'll need an original charging cable to do this. Remove the tracker capsule from the strap if it's still there, and plug it into the slap. USB-It is important to use a good cable, as oxidized contacts can interfere with the supply of current.
☑️ Pre-charging check
When you connect to the power source, the device should vibrate, and this vibration signals that the controller has received power and started the start procedure. If the screen remains black, wait a few minutes — perhaps the battery was completely discharged.
In the rare cases where the tracker is stuck in a cyclic reboot, holding it on a charge for 10-15 minutes can help stabilize the voltage and get out of the error state, especially if the device has been lying unused for a long time.
⚠️ Warning: Do not use powerful smartphone chargers (Quick Charge) unless you have confidence in voltage stability. USB-port of a computer or standard adapter on 1A.
If the device goes out again after being connected to charging and the Xiaomi logo appears, the problem may be a critical discharge of the battery or its physical wear, in which case the charge-discharge cycle may need to be repeated several times.
Full reset to factory settings
When you want to completely clear the device memory of all user data, a factory reset is performed, this action is necessary before selling the bracelet or if the software errors are systemic in nature and are not eliminated by a normal restart.
The reset procedure on Xiaomi Mi Band 4 does not have a separate button in the menu of the tracker itself. All control is carried out through the application. You need not just untie the device, but to execute a cleanup command if this option is available in your version of the firmware, or use the “Add as new” function after untie.
| Parameter | Reboot (Reboot) | Factory Reset (Factory Reset) |
|---|---|---|
| Data retention | Yes. | No (all removed) |
| Bluetooth settings | Preserve. | Dropped. |
| Dials | Stay. | Resetting to default |
| Time of use | It doesn't change. | Resetting. |
Once the reset is done, the tracker will return to the state it was in right after leaving the factory, you will have to reconfigure the language, the time format (12/24 hours) and raise your wrist to activate the screen, and you will also need to re-link your Mi Account.