How to unlock Xiaomi Mi Band 4: the complete guide

Owning Xiaomi wearables means a high level of security, and the Mi Band 4 is no exception to the screen lock feature, which allows you to protect your health data and notifications from prying eyes by requiring input. PIN-But there are different situations: the code may be forgotten, the device may "hang" on the input screen, or you have purchased a used gadget tied to someone else's account.

The process of unlocking a fitness tracker depends on what type of lock you are interested in. PIN-A code that the user sets himself, and linking the device to a Mi Account, which is a measure of protection against theft, in the first case, resetting will help, in the second case, you will need access to the data of the previous owner or request support.

In this article, we will discuss in detail all available methods for restoring access to the functionality of your gadget. We will consider the standard ways to disable passwords through the application, methods of forced reset and the nuances of working with locked devices. The only guaranteed way to remove the forgotten PIN-code without access to the phone is a complete reset of the device to factory settings. Follow the instructions carefully so as not to damage the tracker software.

Types of locks in Xiaomi Mi Band 4

Before you start taking action, you need to be clear about what kind of problem you're facing. There are multiple layers of protection in the Xiaomi ecosystem, and the methods for circumventing them are radically different. The confusion in terms often leads to users trying to unlock the screen when the problem lies in the account's binding, or vice versa.

The first and most common type is a lock screen, which is activated manually by the user in the bracelet settings via the Zepp Life app (formerly Mi Fit), which is simple: a pulse sensor or accelerometer detects the device being removed from the hand, and requires the re-wearing of a 6-digit code, without which access to the dial and functions is limited.

The second type is the Mi Account binding, which is a system protection that prevents the tracker from syncing with the new smartphone unless it has been untied from the old one. On the bracelet screen, this is not usually displayed as a lock, but the app will refuse to add the device, giving an error that it is occupied by another user. The third option is a software failure when the interface hangs on the screensaver.

⚠️ Note: If you bought a wristband and it is blocked by someone else's account, no software resetting methods from the user will not help to untie it from Xiaomi servers.

It's important to distinguish between these states, because each has its own algorithm of actions. Trying to reset an account through resetting the bracelet settings is useless, because the binding information is stored on the server. Conversely, trying to untie an account through support will not help if you just forgot. PIN-screen-code.

Staff shutdown PIN-code-by-app

If you remember your current password or have access to an unlocked bracelet but want to eliminate the need for constant input, it is best to use the standard method. This is the safest way that does not require rebooting the device and ensures that all accumulated data about training is stored.

To manage security settings, you use the Zepp Life app (or Mi Fitness, depending on the firmware version and region) to ensure that the bracelet is connected to your smartphone via Bluetooth and is in the zone of confident signal reception.

The disconnection process is as follows:

• 📱 Open the Zepp Life app on your smartphone and go to your device profile.
• 🔒 Find the bracelet settings menu item and select the screen lock option (or unlock by lifting).
• ❌ Click the button Turn off or Delete password, after which the system will ask to confirm the action by entering the current one. PIN-code.

Once you do this successfully, the lock function will be deactivated, and when you remove and re-wear the Mi Band 4 will immediately display the dial, and if you forget the code, this method will not work, since the system will require you to enter the forgotten combination to confirm your rights to change the settings.

Full Reset (Hard Reset) Method

In a situation where PIN-The only effective solution is to force the reset to factory settings, which completely clears the internal memory of the tracker, removing all user data, dial settings and, most importantly, the forgotten password.

Now, you have to understand that Hard Reset is a radical measure, and once you do it, it goes back out of the box, and all the steps, pulses, and dreams that haven't been synced to the cloud or the phone are going to be lost, so if you have the slightest chance of remembering the code or accessing the unlocked state for synchronization, you better use it.

There are two main ways to reset the Mi Band 4: One is through the menu of the bracelet itself if the interface responds to touch, and you can scroll through the menu to Settings (the gear icon), find Unlock or System, and select Reset, and the device will alert you to the loss of data and ask you to confirm the action with a long press of the touch button.

The second option is relevant if the menu does not open or the bracelet is "hang" on the password entry screen, in which case the "Reverse" function in the application helps:

• 📲 Go to the Zepp Life app and select your bracelet.
• 🗑️ Scroll down to Unbind or Delete the device.
• ✅ Confirm action. In most cases, the app will automatically send a command to reset the bracelet before uncoupling.

Once the procedure is complete, the tracker will restart and prompt you to choose a language and conjugate with the phone again. At this stage, the screen lock will be absent, and you can set a new one. PIN-code or leave this function disabled.

The problem of binding to Mi Account

Special attention should be paid to the situation when the bracelet is technically sound, but refuses to connect to your phone, claiming that it is busy, this is not a lock screen, but protection against theft at the level of Xiaomi servers, which is often found when buying devices from hands or on sites like Avito.

The mechanism is that when the tracker is first activated, it is “linked” to the account of the person who set it up, and even after a full reset, when the server tries to re-activate, it will verify the unique device identifier (MAC-address, and if it sees an active link, it will not allow it to be connected, and it is impossible to get around this locally.

To solve the problem, the previous owner must:

1. Sign in to your Zepp Life app from the account to which the bracelet is linked.
2. Find the device in the list and select the option to Remove or Untie.
3. Wait for confirmation of successful removal.

Only after the previous owner removes the device from his list, the new user will be able to successfully complete the activation procedure. If you can not contact the seller, the device, alas, will remain a useless piece of plastic and silicone, since server binding is an insurmountable barrier for ordinary users.

It is important to always check with the seller the status of the device binding before buying. Honest sellers have no problem untie gadgets with the buyer. If you are offered a device "without box and documents" at a suspiciously low price, chances are that it is a stolen or lost tracker with active locking.

What to do if the bracelet freezes or does not respond

Sometimes the “locking” problem is just a result of a software failure. Xiaomi Mi Band 4, despite its reliability, can encounter firmware errors, especially if the battery is critically low or there is a failure when updating. In such cases, the screen may burn but not respond to touch, or the device can display the logo endlessly.

The first thing you need to do is check the charge level. Connect the tracker to the original charger and leave it for at least 30-40 minutes. Often the system blocks data input or functionality at a voltage below a certain threshold to save energy. If the situation hasn't changed after charging, try rebooting.

For reboot, if the touchscreen is partially working:

• ⚡ Go to Settings. → System system.
• 🔄 Select the Reboot option (Reboot).
• 👆 Confirm the action with a long press.

💡

If the sensor doesn't respond at all, put the bracelet on the charger. In some firmware versions, the charging connection initiates a soft reboot of the system.

If the menu is not available and the device responds to charging (vibrates or lights up the screen), but does not work, you can try the "discharge to zero" method. Leave the bracelet in the sun or on until the battery is completely discharged. After it turns off, put it on charge. When turned on after a deep discharge, the system often conducts a self-check and can get out of the freeze state.

⚠️ Warning: Do not attempt to disassemble the body of the Mi Band 4 to retrieve the battery in order to reconnect it.The capsule is sealed, and the violation of the integrity of the body is guaranteed to deprive the device of moisture protection and can damage the sensor plume.

Preventing access problems

So in order to avoid the need for an emergency unlock and data reset in the future, you should adhere to a few simple rules of operation. Safety is important, but it should not become an obstacle to using the gadget. PIN-codes in a secure location, such as in a password manager on a smartphone.

Keep your data synced regularly. Mi Band 4 has limited internal memory. If you haven't opened an app for a long time, the tracker may stop writing new data or work slower. Frequent synchronization also serves as a kind of backup: even if you have to reset, your activity history will remain in the cloud.

Watch for firmware updates. Xiaomi periodically releases patches to fix system bugs. Go to the bracelet settings in the app and check for updates. It is best to install new versions with a charged battery (>50%) and a stable connection to the Internet.

💡

Regular synchronization and recording PIN-Code in a safe place – the best protection against data loss and access issues.

Also, the Find the Bracelet feature in the app is not a good way to unlock, but it makes sure the device is active and responsive to commands, which is useful for diagnosing communication status before attempting complex operations.

Frequently Asked Questions (FAQ)