Owners of popular fitness trackers from the Chinese manufacturer often face a situation where the device stops responding to touch or refuses to synchronize data with the smartphone. In such cases, a standard screen switch or change of the dial is not enough to restore normal operation of the gadget. The user needs to perform a forced reboot of the Xiaomi Mi Band 4 NFC to reset temporary software errors and bring the tracker back to life.
There are several proven ways to reanimate a device that has been stuck in a loop of endless loading or simply stopped responding to commands. Modern wearables have complex software architectures where sometimes there are process conflicts that require a full cycle of on and off. Understanding the mechanisms of the tracker operating system will help you choose the most effective method of solving the problem without losing important training data.
In this article, we will take a look at all the reboot options available, from standard mobile application procedures to hardware interventions, where a full reset is required and when simple synchronization is sufficient. It is important to act consistently so that your fitness bracelet software is not damaged.
Soft reboot via the Mi Fit app
The safest and most recommended way for the manufacturer to restore the tracker to work is to use official software. First, make sure your smartphone is in close proximity to the bracelet and the Bluetooth module is activated. Open the Zepp app (formerly known as Mi Fit) and go to your device profile.
You need to find the system operations section in the gadget control menu, which is usually hidden at the bottom of the settings or marked with the gear icon, and this is the tracker disablement function, which initiates the program cycle of turning off and then automatically turning on when charging or touching.
- 📱 Open the Zepp app on your smartphone.
- ⌚ Go to Profile and select Mi Band 4 NFC.
- ⚙️ Find the “Unplug” or “Unbind” button (for full retraining).
- 🔄 Confirm the action on the smartphone screen.
⚠️ Warning: The shutdown process can take up to 30 seconds, do not move the phone far from the bracelet at this point, so as not to interrupt the transmission of system commands.
Once the command is executed, the monitor screen will go out and the device will go into sleep mode. To complete the soft reboot cycle, plug the bracelet into the charger or simply tap the touch button if the model supports touch awakening, this action will start the operating system again, clearing the cache of temporary files.
Hardware discharge via charger
If software methods don’t help or the app can’t see the device, you can take advantage of the physical impact on the power controller. Xiaomi Mi Band 4 NFC is equipped with a special contact to charge on the back of the capsule. Connecting to the power source often interrupts current processes and initiates a restart of the system.
To do this, you'll need an original or certified charging cable, insert the tracker capsule into the connector so that the contacts fit tightly together, and in some cases, the system may freeze during the initialization of charging, so it's important to monitor the behavior of the screen.
☑️ Pre-charging check
There is a nuance about the state of the battery: if the charge level is critically low, the device may not turn on immediately, but only start to store energy, in which case the reboot cycle will be delayed until the minimum voltage threshold necessary to start the kernel of the system is reached.
If the screen catches fire and shows the Mi logo, it's a success, but if the screen displays a dead battery icon, leave the device on charge for 10-15 minutes, then try to unlock it with a touch, which is the standard procedure for protecting lithium polymer batteries from deep discharge.
Forced restart when getting stuck
Situations where the tracker interface is completely blocked and no longer responds to any commands are called “freeze.” In this case, a standard shutdown is impossible, since the system does not process data input. Xiaomi Mi Band 4 NFC is characterized by a method of “hard” reboot through discharge or a specific combination of actions.
Since there is no physical button on the device body that can be held for 10 seconds (like a smartwatch), there is a trick to do. The most effective way is to wait for the battery to run out completely. Leave the tracker on until it shuts down due to lack of power.
- 🔋 Leave the device alone until the screen is completely turned off.
- 📉 Make sure the bracelet does not respond to touch and light indicators.
- 🔌 Connect the tracker to the charger.
- ⚡ Wait for the logo to appear and the system to load.
This method ensures that all running processes are stopped by hardware. Once connected to the power grid, the power controller drops error flags and the system starts from scratch. This is especially useful if the software failure was caused by a bug in the code of a particular application or widget.
What to do if the screen is black after charging?
Comparison of reset methods
The method of restoring the device depends on the specific situation and the symptoms of the malfunction. It is not always necessary to resort to radical measures such as full discharge if the problem can be solved software. Below is a table that helps determine the best course of action.
| Method | Difficulty | Implementation time | Risk of data loss |
|---|---|---|---|
| Through the Zepp app | Low. | 1-2 minutes | Absent. |
| Charger | Low. | 5-10 minutes | Absent. |
| Full discharge. | Medium | 10-20 hours | Minimum |
| Resetting settings | Tall. | 5-10 minutes | Total loss. |
As you can see from the table, the fastest and safest way is to use a mobile application, but if the bracelet's programming interface is blocked, this method becomes unavailable, and in such cases, you have to rely on the physical properties of the device.
It is important to understand that regular reboots are not required for wearable electronics to function properly. Current operating systems, such as the firmware in Mi Band 4, are optimized for long-term operation without user intervention. Frequent reboots may indicate a deeper problem.
Reset to factory settings (Hard Reset)
When none of these methods help to eliminate critical errors, the final argument is a complete factory reset: This operation deletes all user data, dial settings, saved workouts and account binding. Hard Reset returns the device to the “out of the box” state.
To perform this procedure on Xiaomi Mi Band 4 NFC, you need to find the corresponding item in the menu of the bracelet itself, usually in the “More” or “Settings” section.
⚠️ Before performing a reset, make sure that all important data is synced to the cloud in the Zepp app, otherwise your activity history will be irretrievably lost.
Once the action is confirmed on the tracker screen, the internal memory formatting process will begin, the device can vibrate and reboot several times during this process, do not remove the bracelet from charging and do not interrupt the procedure until the welcome language selection menu appears.
Once the reset is complete, you will need to re-attach the device to your smartphone, which will create a new file configuration and can eliminate errors caused by corrupt system files or update conflicts, a last resort, but often the only possible option for serious software failures.
Fixing Frequent Problems After Rebooting
Sometimes, after a successful reboot, users find that some features are not working correctly, such as notifying them of calls or stopping taking pulses, because the background services on the smartphone could fall off when the device was reconnected.
First, check your Bluetooth settings on Android or iOS, remove the old Mi Band 4 pairing from the phone’s list of available devices, and search again, often addressing unstable connection issues.
- 🔍 Remove the device from the Bluetooth list in your phone settings.
- 📲 Open the Zepp app and re-assign.
- 🔔 Check the permissions for the application in the privacy settings.
- 🔄 Reboot your smartphone to update network services.
You should also pay attention to the firmware version. If the tracker offers software updates after the reboot, be sure to agree. Developers regularly release patches that fix known bugs and improve the stability of the firmware.
💡
For stable notifications, add Zepp to your smartphone’s power saving exception list, which will prevent Android from forcing sync services to shut down.
Prevention of hangings and failures
To minimize the need for frequent reboots, you should follow simple rules of use of the gadget. Avoid installing unofficial dials from unverified sources, as they may contain code that causes memory leaks.
Clean the notification list of messages coming to the wristband regularly. A crowded notification buffer is one of the common causes of slowing down the interface and subsequent freezes. Try not to keep more than 10-15 messages read in the history.
Watch the strap and contacts. Sweat or moisture in the charging sensor area can short-circuit or falsely trigger the controller, leading to chaotic behavior, and regular hygiene prolongs the device's life.
💡
Timely update of firmware and use only official dials reduce the probability of hanging by 90%.
Remember that Xiaomi Mi Band 4 NFC is a complex electronic device that requires careful handling. Proper operation and understanding of its principles will allow you to enjoy the functionality of the tracker for many years without the need for constant repair or resets.