How to completely untie the fitness bracelet Xiaomi Mi Band 4 from the phone and account Mi

The Xiaomi Mi Band 4 fitness bracelet remains one of the most popular trackers even years after its release, thanks to its reliability, long work time and wide functionality. However, sooner or later, it becomes necessary to break the connection between the device and the phone: when selling the bracelet, changing your smartphone, switching to another Mi Account or fixing synchronization errors. Unlike new models (for example, the Mi Band 7), the fourth version has its own nuances of decoupling, which often cause problems.

In this article, you will find step-by-step instructions for all scenarios, from standard uninstallment from the Mi Fitness app to forced resetting of the bracelet through a hidden menu. We will also discuss why the device can remain attached to the old account even after a reset and how to fix it. If you plan to sell or transfer the bracelet to another person, be sure to read the section on the complete data cleanup.

When to break the connection with Mi Band 4

Not everyone understands that simply removing the bracelet from the device list in the Mi Fitness app (formerly Mi Fit) isn't always enough.

• 📱 Smartphone Change – If you’ve switched to a new phone, the old bracelet may conflict with the new device in one account.
• 💰 Selling or transferring the bracelet – without a waive, the new owner will not be able to link the Mi Band 4 to his account.
• 🔄 Resetting phone settings - after restoring factory settings of the smartphone, the bracelet can "hang" in the connection state.
• 🐞 Synchronization errors – if data stops updating and reconnection doesn’t help, a “hard” uncoupling is required.
• 🔒 Change of Mi Account – when you switch to another Xiaomi profile, the bracelet remains tied to the old one.

It is important to understand the difference between delisting (the bracelet stays in the account but does not sync) and completely resetting (the device returns to factory settings and is ready for a new binding). In most cases, the first option is enough, but the second one is needed to sell or eliminate serious errors.

Method 1: Standard removal through the Mi Fitness application

This is the simplest and safest method, and it works 90 percent of the time: it doesn't erase the data from the wristband, but it cuts the connection to your current phone and account, and it's relevant to the latest versions of the app (2023-2026).

1. Open the Mi Fitness app on your smartphone.
2. Go to the Profile section → My devices.
3. Click on the Xiaomi Mi Band 4 icon in the list.
4. In the upper right corner, tap three points (⋮) and select Remove the device.
5. Confirm the action – the bracelet will be disconnected from the account.

After that, the Mi Band 4 will disappear from the list of devices, but will remain tied to the Mi Account.

• 🔄 You can connect it to the same account again without resetting.
• 🚫 New users will not be able to tie the bracelet to their profile.
• 📊 Steps, sleep and workout data will be stored in the Mi cloud (if synchronization is enabled).

If after removal the bracelet does not appear in the list of available devices when reconnecting, try to restart the smartphone and the device itself (to do this, press the touch button on the Mi Band 4 for 10 seconds).

Method 2: Complete reset of the bracelet to factory settings

This method erases all data from the Mi Band 4, including the link to the Mi Account.

• 📦 You sell or transfer the bracelet to another person.
• 🔧 Standard removal did not help to eliminate synchronization errors.
• 🔒 The bracelet is “hang” in the state of connection to the old phone.

To reset, follow the following steps:

1. On the bracelet, go to Settings → Additional → Reset (scroll the menu with swipes up/down, confirm the tapom choice).
2. Confirm the action - a tick will appear on the screen, and the bracelet will reboot.
3. After rebooting, the device will be ready for a new binding.

Once reset, the bracelet will appear as a new device in the Mi Fitness app, but there is a caveat: if it was previously linked to a Mi Account, then when you try to connect to another profile, you may experience an error "Device is already tied", in which case you need to additional uncoupling through the web version of Mi Account (more about this in the next section).

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The factory reset removes all the data from the bracelet, including step history, alarm clocks and screen settings. It will be impossible to recover them!

Method 3: Unlocking through Xiaomi account (if the bracelet is not reset)

Sometimes, even after a reset, the Mi Band 4 remains tied to an old account, because of the way Xiaomi servers work: the device registers in the cloud, and without removing it, the new user will not be able to connect it.

1. Go to account.xiaomi.com and log in to the account to which the bracelet is attached.
2. In the menu, select Devices → Device management.
3. Find the Xiaomi Mi Band 4 (can be displayed as MIBAND4 or Wearable device).
4. Click on the three dots next to the device and select Remove.
5. Confirm the action – the bracelet will be removed from the account.

If the device does not appear in the web version of the account, but when trying to connect to a new phone gives an error - try the following solutions:

• 🔄 Change your account region: Select another region in your Mi profile settings (e.g., Russia) → Singapore, save the changes and try to remove the bracelet again.
• 📧 Write in support: through the feedback form on the Xiaomi website, request the removal of the device, specifying it IMEI (You can find it in the bracelet settings or on the box).
• 🕒 Wait 24 hours: Sometimes Xiaomi servers sync data with a delay.

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If you don't remember the password from your old Mi Account, but the bracelet is tied to it, try to restore access via email or phone number. Without this, you can't untie the device.

Problem Solving: The bracelet does not untie or reset

Even when following instructions, users often encounter errors, and let's look at the most common problems and their solutions.

If none of these methods worked, and the bracelet is still locked in to the old account, the last option is firmware through the computer, which requires technical skills and is only suitable for advanced users.

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Before you run your firmware, save your bracelet data (if possible) - the process erases all information without recovery. Firmware instructions for the Mi Band 4 can be found on the 4PDA or XDA Developers forums.

How to check if the bracelet is successfully untied

To make sure that the Mi Band 4 is fully ready for the new tether, follow the following steps:

1. Reset the bracelet (press the button for 10 seconds).
2. Open the Mi Fitness app on your new phone.
3. Click Add the device → Bracelet → Mi Band 4.
4. If the bracelet is displayed in the list available for connection - it is successfully untied.

Additional signs of successful decoupling:

• 🔍 The bracelet does not appear in the old account’s device list (account.xiaomi.com).
• 📱 When connecting to a new phone, there is no error "The device is already tethered".
• ⚙️ All bracelet settings reset (time, alarm clocks, screen background).

⚠️ Warning: If you sell a bracelet, be sure to check it on another phone before handing it over to the customer. There are times when a device that appears "unbound" actually stays attached to an old account and is locked after a few days.

Frequent User Mistakes and How to Avoid Them

Many of the problems with the Mi Band 4 uncoupling are due to the lack of awareness of the Xiaomi ecosystem, and these are the most common mistakes:

• 🔋 Battery discharge: the bracelet must be charged at least 50%, otherwise the reset may be incorrect.
• 📶 Internet: Deleting a device from an account requires a stable connection to the network.
• 🔄 Use of old Mi Fitness: Older versions of the application may not have an uninstall option.
• 🔒 Trying to connect the bracelet to another account without detachment: this leads to the device locking.

To avoid problems:

1. Always remove the bracelet through the app first and then perform a reset.
2. Check the device binding in the web version of your Mi Account.
3. Do not use "left" firmware - this can lead to permanent locking of the bracelet.

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If you plan to use the bracelet with another Mi Account, first remove it from your old profile, then reset, and then connect to your new phone.

FAQ: Answers to Frequent Questions