What application you need Xiaomi Mi Band 4: a complete guide to Mi Fit and Zepp Life

Owners of the popular Xiaomi Mi Band 4 fitness tracker often face confusion when it comes to smartphone software. The name and functionality of the software are a lot of myths, especially after the rebranding of the Xiaomi ecosystem. Understanding what kind of application is required to work your gadget is a key step to fully use all its features.

There are two main names that you can find in the app stores today: Mi Fit and Zepp Life. These are not two different programs, but the same system that changed its name. To work properly, your tracker needs to understand the nuances of this transformation and choose the right version for installation.

In this article, we will take a closer look at the renaming history, functionality, and step-by-step process of connecting the Mi Band 4 to a smartphone, explaining why old instructions may not be relevant and how to avoid common mistakes in synchronizing health and activity data.

The history of renaming: from Mi Fit to Zepp Life

For a long time, Xiaomi’s main tool for managing smartwatches and trackers was the Mi Fit app, which was the industry standard for low-cost wearable electronics, providing stable data transfers about heart rate, steps and sleep. However, in late 2020, Huami (the manufacturer of trackers commissioned by Xiaomi) made a strategic decision to rebrand.

Mi Fit has been renamed Zepp Life, a change that not only affects the name and icons, but also the internal architecture of the servers that transmit user data. It is important to understand that functionally for the average Mi Band 4 owner, it is the same app, just with a new name on the Google Play store or the App Store.

Despite the change in signage, the old name is still deeply ingrained in the minds of users. Many forums and video instructions still use the term Mi Fit, which causes confusion among beginners. If you are looking for a program for your bracelet, know that the official name of the app in 2026 is Zepp Life, but it is fully compatible with devices that previously supported Mi Fit.

There is also the Mi Fitness app (formerly Xiaomi Wear) that is designed for newer models and a different line of devices. For the Mi Band 4, it is not the main one and may not work properly or offer stripped-down functionality, so focus on the product from Zepp.

Zepp Life or Mi Fitness: What’s the Difference and What to Choose

The choice between Zepp Life and Mi Fitness (Xiaomi Wear) is particularly acute, as both apps are available in official stores and have a similar logo in the form of the letter "Z" or the Mi logo.

Zepp Life is the direct successor to Mi Fit. This app provides full support for the interface, dials and notification functions for the Mi Band 4. Developers continue to release firmware updates and add new faces specifically for this model within this platform.

In turn, Mi Fitness is focused on more modern devices, such as the Mi Band 6, 7, 8 and the Amazfit line. Attempting to connect the “four” through this application can lead to the fact that the tracker will work in the basic mode, losing some of the notification settings or the ability to install third-party dials.

• 📱 Zepp Life: Full compatibility, all notification features, a huge selection of dials, stable history synchronization.
• ⌚ Mi Fitness: Optimized for new models, may not support older Mi Band 4 communication protocols, limited functionality for this model.
• 🔄 Data portability: When you switch from Mi Fit to Zepp Life, your activity history is automatically saved as your accounts are merged.

It's worth noting that Zepp Life's interface is more modern and visually pleasing than the classic Mi Fit. New types of sleep charts and activity analysis have emerged, making the app more informative. Choosing Zepp Life will give you access to relevant features and data security.

Step-by-step instructions for connecting Mi Band 4

The process of pairing the bracelet with a smartphone requires care, especially if the device was previously connected to another phone or application. Before you start, make sure that your smartphone is enabled Bluetooth and GPS (geolocation), as without permission for the location of Android will not allow the application to scan the devices.

First, download and install the Zepp Life app from the official Google Play or App Store. APK-Files from dubious sources to avoid viruses. Once installed, launch the app and create an account using a phone number, email or social media account (WeChat, Facebook).

Next, perform the following actions:

1. Open the Zepp Life app and go to the Profile tab (bottom right icon).
2. Click on the "Add device" button.
3. Select "Band" -> Mi Band 4.
4. Wait for the vibration to appear on the bracelet and confirm the pairing by touching the touch button on the tracker.

Important point: if the app finds the device but gives an error when connecting, try first "forget" the device in your phone's Bluetooth settings, and then repeat the search inside the app. Direct connection through the Bluetooth system menu often leads to data synchronization errors.

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If the bracelet is not found, reboot your smartphone and bracelet. Sometimes it helps to clear the Bluetooth cache in the Android settings (Settings -> Apps -> Bluetooth -> Memory -> Clear the cache).

Set up notifications and Russification of the interface

One of the main features of the Mi Band 4 is to display notifications, so that they come correctly, you must give the Zepp Life app all the permissions you ask for, and without this message from WhatsApp, Telegram or calls will not appear on the monitor screen.

To set up, go to the device profile in the app and select Notifications, where you'll see a list of all apps installed on your phone, activate the ones you want to see on your wrist, and set up vibrations when you call and turn off the alarm clock by turning your hand.

The interface language is also worth special attention. Mi Band 4 supports Russian, but it should be downloaded separately. In the Zepp Life application, in the section of the bracelet settings (Profile -> Mi Band 4), find the item "Language". If Russian is not on the list, click "Check Updates" in the bracelet profile - along with the firmware, the language package will be downloaded.

Keep in mind that frequent vibration and constant monitoring of the pulse can significantly reduce battery life, the optimal solution is to set the heart rate of 10 or 30 minutes, and turn off the wrist lift at night.

Solving synchronization and connection problems

Even the most reliable devices sometimes experience technical failures, and the most common problem for Mi Band 4 owners is the loss of communication with their smartphone or the app’s failure to sync data, which can be caused by both Android/iOS software errors and the battery drain of the tracker.

If you notice that the steps are not updated, try a soft reset. In the Zepp Life app, go to the bracelet profile and scroll down to the bottom of the Unbind button. Once untie, the bracelet will return to factory settings and need to be reconnected as a new device.

⚠️ Warning: Before untie the bracelet, make sure that the data from the last day is synchronized. When untied without prior synchronization, the data accumulated since the last successful connection may be lost.

Another common cause of problems is aggressive energy saving on Xiaomi, Huawei and Samsung smartphones.The system can "kill" the Zepp Life process in the background, which stops notifications coming.

Also worth checking out is the Bluetooth version. Mi Band 4 uses Bluetooth 5.0, but works great with older versions 4.0 and 4.2. However, if the phone is on "Energy Savings" mode for the Bluetooth module, the stability of the connection may decrease.

Expanded features and installation of dials

The Mi Band 4 is a good feature, but the potential is unlocked with third-party dials. The Zepp Life app has a built-in store, but its range is limited. To download thousands of free and paid designs, users often use third-party download apps, such as Notify & Fitness for Mi Band or Tools & Mi Band.

These companion apps allow you to install any image on the screen, change the format of the display data and even add new features not intended by the manufacturer, but using third-party software requires caution and understanding the risks.

• 🎨 Customization: The ability to put a photo of a family or pet on the main screen.
• 📊 Detailed statistics: A deeper analysis of sleep phases and blood oxygen levels (if supported by sensors).
• ⚙️ Control: Advanced vibration and alarm settings not available in Zepp Life.

When installing third-party dials through downloaders, it is important to remember security. Only download files from trusted sources within these applications so as not to damage the tracker firmware. An improperly assembled dial file can lead to the bracelet going into a bootloop (cyclic reboot).

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Using third-party dial apps extends the capabilities of the Mi Band 4 beyond recognition, but requires careful choice of file sources.

Frequently Asked Questions (FAQ)