Changing your smartphone is often a cause of panic among wearable electronics owners, especially when it comes to popular activity trackers. Users rightly fear that when you reconnect the Xiaomi Mi Band 4 to a new device, all accumulated data about training and sleep will be irretrievably lost, and the gadget itself will cease to respond to commands. However, the architecture of the Zepp Life and Mi Fitness applications is built in such a way that cloud synchronization allows you to easily transfer the profile to a new device, saving the entire history.
The transfer process does not require complex manipulation of codes or third-party software, but it has a critical feature. Before pairing with a new phone, be sure to break the bracelet connection with the old device through Bluetooth settings, otherwise the new smartphone will simply not see the accessory. In this article, we will discuss in detail the algorithm of actions that ensures successful connection and stable operation of the fitness tracker in conjunction with the new operating system, whether it is Android or iOS.
It should be noted that the procedure takes no more than 5-10 minutes if you prepare in advance, you will need a stable Internet connection to log in to the account and the battery charge in the bracelet at least 20-30%. Ignoring these basic requirements can lead to synchronization errors or interrupt the process of updating the firmware, which often occurs automatically when you first contact a new host.
Preparing an old smartphone and backup
The first and most important step is to work with an old phone that you plan to untie the tracker. Many users make the mistake of immediately starting to search for a device on a new gadget, forgetting that the Mi Band 4 can maintain an active connection to only one smartphone at a time. If you just turn off Bluetooth on an old phone, the bracelet will remain "locked" in its memory, which will cause conflicts.
You need to open the application that you were managing, most commonly Zepp Life (formerly Mi Fit) or Mi Fitness. Go to the device profile, scroll down the options list and find the Unplug or Unpair button, which will force you to break the connection and clear the pairing cache on the accessory side, making it visible to other devices.
In parallel, make sure that all your data is uploaded to the cloud. Open the app and pull the main screen down for forced synchronization. If you see the current date and time of the last step recording, then the backup is created. After that, you can safely delete the application from the old phone or just turn off Bluetooth without fear of losing statistics.
- 📱 Open the Zepp Life or Mi Fitness app on your old device.
- 🔓 Go to the Mi Band 4 profile and click Untie).
- ☁️ Perform manual data synchronization before disconnecting.
- 🗑️ Remove the app or turn off Bluetooth on your old phone.
☑️ Preparation for transfer
Installation and configuration of the application on a new phone
On the new smartphone, the process begins with downloading the current version of the software to control the tracker. For Xiaomi Mi Band 4, it is recommended to use the Zepp Life application, as it provides the most complete functionality and stability for this model, although Mi Fitness support is also preserved.
Once installed, launch the app and log into your existing Xiaomi Account or WeChat account that was used before. This is the key point: logging into the same account will automatically pull up your entire activity history stored in the cloud. If you register again, the statistics will start from scratch, so carefully enter your login and password.
An important step is to provide all the necessary permissions. Modern versions of Android and iOS strictly control access to geolocation and Bluetooth. Without GPS enabled (even if you do not use maps), the application often can not find the device to pair. Allow access to notifications, contacts and background work so that the bracelet can correctly display incoming calls and messages.
⚠️ Note: On Xiaomi, Huawei and Samsung smartphones, aggressive power saving settings can block the application from running in the background.Be sure to add Zepp Life to battery exclusions and allow auto-start, otherwise notifications will stop coming immediately after the screen is turned off.
The process of pairing the bracelet with a new device
Once the application is installed and authorization is completed, you can go to the direct connection. In the main menu of the application, click on the plus or add device button. The system will suggest you select the device type - in the list, find Band 4. At this stage, the bracelet screen can request confirmation of pairing, tap the touch button on the tracker to activate the search mode.
If the automatic search doesn't work, try the standard method through the Bluetooth settings of the operating system. Find Mi Band 4 in the list of available devices and click "Connect." Once the connection is successful, the system will switch control back to the application itself. Sometimes you need to enter a confirmation code that appears on the tracker display.
When you first connect, you often automatically update your firmware. The bracelet screen will go out or start flashing, and the phone will have a progress bar. You can't interrupt this process, you can't just keep the devices close to you and don't lock your smartphone screen so that the data transfer is successful. Once you update, the bracelet will reboot and synchronize the time.
| Phase | User action | Indication of success |
|---|---|---|
| Search | Press "Add" in the annex | Mi Band 4 appears on the list |
| Pairing. | Confirmation on the bracelet screen | Vibration and communication icon |
| Update | Waiting for the end of the process | Rebooting the tracker interface |
| Synchronization | Automatic data loading | Current time and steps |
What to do if the bracelet is not in place?
Set up notifications and monitoring functions
After successfully connecting Xiaomi Mi Band 4 to another phone, standard settings may be lost or not activated automatically.You will need to reconfigure the list of applications from which notifications should be displayed on your wrist. Go to the profile of the bracelet in the application, select Application Notifications, and activate the desired messengers and social networks.
Special attention should be paid to adjusting sleep and pulse monitoring, and to properly work these functions, you need to give the application permission to constantly access location data and background activity, without which the autonomy of the bracelet can decrease, and health data will be collected at large intervals or omissions.
Also check the wrist lift settings to turn on the screen. The sensor calibration may have been lost when you reconnect. Go through the wristband menu and make sure the sensitivity is set to a comfortable level and the time format and date are displayed correctly according to the time zone of the new region.
- 🔔 Enable notifications for WhatsApp, Telegram and calls in your device profile.
- ❤️ Activate continuous pulse monitoring for accurate statistics.
- ⌚ Set up a schedule of "Do Not Disturb" mode".
- 🌍 Check the time zone and time format (12/24 smack).
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To save battery power, turn off the display of unnecessary apps in notifications and reduce the brightness of the bracelet screen to 30-40%. This will significantly prolong the autonomous operation of the Mi Band 4.
Solving Typical Connection Problems
Even if you follow all the instructions, you can run into technical difficulties. One of the most common problems is that you can see the device in Bluetooth, but the app says "Connection error" or "Time-out." This often happens if the system has an old pairing profile, the solution is one: go to the Bluetooth settings of the phone, find the Mi Band 4, click "Forget device" and try again.
Another common situation is that the bracelet vibrates when alerts are made, but the text of messages is not readable (especially on Android 11-14), due to OS security restrictions. You need to manually open the application, go to notification settings and allow access to the notification history in the system menu. Without this step, data privacy is preserved, but the functionality is reduced.
If the bracelet has stopped syncing time or step data, try clearing the Zepp Life app cache in your phone settings. Sometimes it helps to completely reinstall the app with a mandatory login to the same account. In rare cases, you need to completely reset the bracelet to factory settings through the tracker's menu itself.
⚠️ Warning: If the bracelet is discharged quickly after reconnection (for the 1-2 Check if the function of constant pulse measurement is included at intervals of 1 Also make sure the firmware version is up to date, as older versions may have power-consumption errors.
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Most connectivity problems are solved by completely removing the device from the phone’s Bluetooth memory and re-authenticating the app.