What app you need for Xiaomi Mi Band 4: Mi Fit or Zepp Life – a full guide to 2026

Owners of the Xiaomi Mi Band 4 fitness bracelet often have to face confusion: what app officially supports their device? Since 2020, Xiaomi has gradually moved users from the familiar Mi Fit to a new application – Zepp Life (formerly known as Amazfit), while both software still work with the Mi Band 4, but have key differences in functionality, interface and even in the displayed data.

To make matters worse, both apps are available on Google Play and the App Store at the same time, and compatibility information is often contradictory. For example, Zepp Life may not mention Mi Band 4, even though the device is successfully connected, and this article will help you figure out which app to choose for your bracelet, how to connect it correctly, and what problems can arise during synchronization.

We analyzed both programs based on tests with Mi Band 4 (routine version 1.0.9.54), user reviews and official statements of Xiaomi, focused on data transfer between applications, differences in display steps and sleep, and hidden features that are only available in one of the software.

Mi Fit vs Zepp Life: Official Mi Band 4 Apps

Let’s start with the main thing: Xiaomi Mi Band 4 is officially supported by both programs, but with nuances. Mi Fit is an old guy from Xiaomi, which was originally developed for the Mi Band line. Zepp Life (formerly Amazfit) is a more modern solution, which is now used as a universal platform for all wearable devices of the brand, including the Mi Band, Amazfit and even some models of the Redmi Watch.

The main differences between the annexes:

• 📊 Interface: Zepp Life has a more modern design with a focus on data visualization (sleep schedules, activity), while Mi Fit looks simpler and more concise.
• 🔄 Sync: Zepp Life updates data more often, but sometimes delays when you first connect to Mi Band 4.
• 📱 Device support: Mi Fit only works with Xiaomi gadgets, and Zepp Life also supports Amazfit and Redmi devices.
• 🔒 Account: You can use Xiaomi, Google or Apple account in Zepp Life ID, Mi Fit requires authorization through Mi Account.

Important: If you’ve used Mi Fit before, you don’t automatically transfer data to Zepp Life, you’ll have to manually export your history from one app and import it to another (instruction below).

How to connect Mi Band 4 to Mi Fit: step-by-step instructions

If you have chosen Mi Fit, the connection process will take no more than 5 minutes.

• 📱 Installed the current version of the application (not lower than 4.6.0 for Android or 4.5.0 for iOS).
• 🔄 Bluetooth and geolocation enabled (required for Android!).
• 🔋 The bracelet is charged at least 20% (otherwise synchronization may be interrupted).

Follow the algorithm further:

1. Open Mi Fit and log in via Mi Account (if you haven’t already).
2. Click Profile → Add the device.
3. Select from the list of Mi Smart Band 4 (not to be confused with Mi Band 5/6!).
4. Follow the instructions on the screen: Confirm the pairing on the bracelet (click on its touch button).
5. Wait until the synchronization is complete (it can take up to 2 minutes).

Update Mi Fit to the latest version

Enable Bluetooth and geolocation

Charge the bracelet at least 20%

Remove old pairings in Bluetooth settings

Reboot your smartphone (if there have been failures before)

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Warning: If the bracelet is not detected, try resetting it to factory settings. To do this, press the touch button on the Mi Band 4 for 10 seconds until vibration appears. After reset, reconnect.

Connecting Mi Band 4 to Zepp Life: features and life hacks

The process of connecting to Zepp Life is similar, but there are key differences:

1. Download the app from the official Stores (avoid clones!).
2. When registering, select Sign in via Xiaomi – this will make synchronization easier.
3. In the add-on menu, find Mi Smart Band 4 (may be in the "Other Devices" section).
4. Confirm the pairing on the bracelet and wait for the firmware update (if available).

The main advantage of Zepp Life is advanced sleep analytics, such as phase detail (light/deep sleep, wake-ups), while Mi Fit simplifies this data, but some users complain about the inflated number of steps in Zepp Life (between 10 and 15 percent more than Mi Fit), which is due to different counting algorithms.

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Warning: If, after connecting to Zepp Life, the bracelet stopped syncing with Mi Fit, it's okay to use both apps at the same time.

Comparison of functions: what Mi Fit can do, and what Zepp Life can do

To finally decide on the choice, compare the key features of both applications in the table:

Note the notifications: Zepp Life allows you to adjust the vibration for specific apps (like Telegram and WhatsApp only), whereas Mi Fit does it globally. Zepp Life also offers weekly reports comparing your activity with other users, a useful motivating feature.

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If you care about pedometer accuracy, calibrate the bracelet before first synchronizing in Zepp Life. To do this, follow exactly 50 steps, then select Calibration of Steps and Following instructions on the screen in the device settings.

Transferring data from Mi Fit to Zepp Life: Is it possible?

Unfortunately, there is no automatic transfer of history between applications, but there is a workaround:

1. In Mi Fit, export your data to Google Fit (Profile → Settings → Sync with Google Fit).
2. In Zepp Life, connect the same Google Fit account (Profile → Settings → Connected Services).
3. Wait for the synchronization (can take up to 24 hours).

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Attention: Only steps, distance and calories will be transferred, there will be no data on sleep, pulse and training. If this is critical, take screenshots of the statistics in Mi Fit before switching.

Alternatively, third-party services like Health Sync (Android) can be used to transfer data between different fitness platforms, but this requires manual adjustment and does not always work consistently.

Frequent problems and their solutions

Even with official apps, Mi Band users 4 They're hitting bugs.-5 Problems and ways to correct them:

• 🔴 Bracelet not connecting: Remove it from the list of devices in the Bluetooth settings of the smartphone, then repeat the pairing in the application. If it does not help, restart the phone.
• 🔄 Data not synchronized: Enable Autosynchronization in the application settings and check if access is blocked by the power saving mode.
• ⚡ Bracelet battery goes down quickly: Turn off the Constant pulse (Device profile) → Monitoring of heart rate → Off.).
• 📵 No notifications: In Android settings, check that notifications and auto-runs are allowed for the app (Mi Fit or Zepp Life.
• 🔊 Bracelet does not vibrate: Make sure the device settings enable Do Not Disturb Mode is not active.

If the problem persists, try resetting the bracelet to factory settings (press the button for 10 seconds) and plug it back in again, which helps 90% of the time.

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Before resetting the bracelet, write down its current settings (alarm clocks, notifications), as they will reset.

Should I Update My Band 4 Firmware?

Both apps offer periodic updates to the bracelet firmware, and in the case of the Mi Band 4, the current version is 1.0.9.54 (at 2026).

• ✅ Correction of synchronization bugs.
• ✅ New dials (if supported).
• ✅ Optimizing battery consumption.

However, there are risks:

• ⚠️ When the process is interrupted, the bracelet may "brick" (stop turning on).
• ⚠️ Newer firmware versions sometimes remove old features (for example, one of the updates lost manual input of water data).

Recommendation: Update your firmware only if you have problems with the current version.

1. Charge the bracelet by 50% or more.
2. Connect to stable Wi-Fi (not mobile internet!)
3. Close all background apps on your smartphone.

FAQ: Answers to popular questions