The Mi Band series has become an integral part of the lives of millions of users around the world, offering convenient activity monitoring and notifications. However, there comes a point when the device needs to be uncoupled from the current smartphone, whether it is selling a gadget, transferring to a relative or replacing the phone with a new model. The Xiaomi Mi Band 4 detachment process has its own nuances that are important to consider so as not to face synchronization problems in the future.
Incorrectly disabling the tracker can lead to the fact that the new owner will not be able to connect the device to his account, since the bracelet will “remember” the previous owner. In this article, we will discuss in detail all ways to correctly break the connection between the gadget and the mobile application, and also touch on the issues of resetting the settings to the factory.
Before you start, make sure your smartphone has a battery charge and the bracelet has enough energy to complete the synchronization procedure, which will avoid the device freezing during the configuration flashing or data resetting process.
Why is the Device Unlocking Procedure Required
The main reason to properly disable the Mi Band 4 is because of the security system of the Xiaomi ecosystem.The wristband is tied to a unique user account ID, and while this connection is active, other users will not be able to add the device to their Zepp Life app (formerly Mi Fit), which protects your personal health and movement data from prying eyes.
In addition, complete reset and unsetting are necessary when software failures occur. If the tracker has stopped displaying notifications correctly, does not synchronize pulse data or constantly loses connection, tying and subsequent binding often solve the problem again, this allows you to clear the settings cache and update the communication protocols between the smartphone and the wearable device.
⚠️ Note: If you plan to sell the bracelet, be sure to complete a Factory Reset after the unbundle. Otherwise, the buyer will see your old activity data on the first connection, which is a privacy violation.
The procedure is also required when switching to another operating system, such as Android to iOS. Although cross-platform is claimed by the manufacturer, a clean junction ensures that there are no profile conflicts. Ignoring this step can lead to the fact that the application on the new phone will try to download old configuration files, causing errors in work.
Preparation of the smartphone and bracelet for untiring
Before you start manipulating the software, you need to perform a number of preparatory steps: First, make sure that the version of the Zepp Life or Mi Fitness app is updated to the latest available in the Google Play store or App Store. Outdated versions may not properly handle the disabling command, leaving the device in a “suspended” state.
Second, check the status of the Bluetooth connection. The bracelet should be in close proximity to the phone (no more than 1-2 meters) so that commands are transmitted without delay. If the connection is unstable, try rebooting the wireless module on the smartphone, turning it off and on through the Quick Settings Panel.
- 🔋 Charge the bracelet to minimum. 20-30%, so that it does not turn off at the critical moment of resetting the profile.
- 📱 Close background applications that can use Bluetooth to free up system resources.
- 🔐 Make sure you remember the username and password from the Mi Account account to which the tracker is linked.
It is also important to understand the difference between simply breaking the connection in Bluetooth settings and software uncoupling in the application: Simply removing the device from the list of conjugated phones in the menu is not a complete uncoupling. the binding data remains on the manufacturer’s servers and in the memory of the bracelet itself, so the new user will still not be able to activate it.
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Before unblocking, force the data to be synchronized by pulling down the main screen of the application, which ensures that all your activity statistics are stored in the cloud before the connection breaks.
The Zapp Life (Mi Fit) app is available.
The most correct and common way to disable Xiaomi Mi Band 4 is to use the regular Zepp Life app.This method ensures that all cloud data is updated and server binding is correctly deleted. The application interface may vary slightly depending on the version, but the logic of actions remains the same.
To start, open the app and go to the Profile tab in the lower right corner of the screen, which shows a list of all connected devices, find your Mi Band 4 in the list and click on it, and the device management page will open, where dial, notification and system settings are available.
Scroll down the menu until you find the Unbind button, and clicking on this button initiates a disconnection process, and the system will ask you to confirm the action, warning you that the data on the bracelet will be deleted but will remain in the application, and after confirmation, a process that will take a few seconds will begin.
☑️ Algorithm of actions in Zepp Life
After successful completion of the procedure, the bracelet will return to standby mode with a proposal to scan. QR-The new binding code will be displayed on the screen of the smartphone, and from that moment on, the device is ready to sell or connect to another account.
Use the Factory Reset function on the bracelet itself
If you don't have access to the app or your smartphone is lost, you can reset directly through the tracker interface. On the Mi Band 4, this feature is available in the settings menu of the device itself. This action will return the gadget to factory settings by deleting all user data and breaking communication with the last connected phone.
To do this, unlock the bracelet screen and swipe the "Additional" menu (three-dot or gear icon, depending on the firmware version) and find Factory Reset or Reset in the options list.
| Parameter | Before dumping. | After discharge |
|---|---|---|
| Account binding | Active. | Remote. |
| Activity data | Save. | Removed. |
| Dial settings | Castomy | Factory |
| Notifications | Included | Disabled. |
⚠️ Note: Factory Reset on the bracelet itself may not remove server-side binding in some firmware versions. If you plan to transfer the device to another person, it is preferable to use the method through the application.
Once the reset is done, the device will reboot. The screen will go out and light up again with the Mi logo. QR-code, this will mean that the bracelet is completely cleaned and ready for new use, time and date reset, and their setting will occur automatically when you first connect to a new smartphone.
What to do if the bracelet does not respond to reset?
Delete the device via Bluetooth settings
Many users try to untie the device simply through the phone's operating system settings. This method is an auxiliary and does not replace software untie through the app, but it is necessary to completely clear the connection traces. In your smartphone's Bluetooth menu, find a device called Mi Band 4.
Click on the gear icon or information icon next to the device name. In the menu that opens, select Forget Device or Unpair. This action will remove the encryption keys from the phone's memory, which will prevent the bracelet from automatically reconnecting in the future.
It's worth noting that if you don't pre-exist through the Zepp Life app, simply removing it from the Bluetooth list will prevent the new owner from plugging in the bracelet. The device will either give you a "busy" error or require a reset, so this step should always go hand in hand with the basic methods.
- 📱 Open the Settings. → Bluetooth on your smartphone.
- 🔍 Find the available Mi Band 4 devices.
- 🗑️ Click Forget Device to completely remove the pairing profile.
After this procedure, it is recommended to restart the smartphone.This will clear the system cache of Bluetooth services and provide a clean start for any future connections of wearable devices.If you plan to sell the phone along with the bracelet, such a thorough data cleanup will be a plus for the buyer.
Solving uncoupling problems
Users may encounter various technical difficulties during the unbundling process, and one of the common problems is the "Undetached" error that can occur when the Internet connection is poor. Because the anchor status is stored on the server, the application needs stable network access to send a database update command.
Another common situation is that the bracelet freezes during the configuration update phase after pressing the undock button, in which case you should not panic and try repeatedly pressing the buttons. Put the bracelet on the charger for 5-10 minutes, which often helps the system complete the background processes and reboot the communication module.
⚠️ Warning: Never try to disassemble the bracelet or use third-party utilities to "unlock" from the server if the standard methods do not work.This can lead to a complete failure of the Mi Band 4 (brick).
If the app says that the device is already untied, but the bracelet continues to work with your data, try logging in from another device or through a web interface (if available) and checking the list of devices in the profile. Sometimes you need to manually remove the gadget from the list of trusted devices in the security settings of the Xiaomi account.
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The main key to a successful decoupling is a stable Internet connection at the time of the procedure and the availability of the latest version of the companion application.