Before you can start using the Xiaomi Mi Smart Band 4, you need to connect and pair it with your smartphone. Pairing links the band to your phone so the device can sync activity data, display notifications, update time and date, receive firmware updates, and allow you to adjust settings through the companion app.
The Xiaomi Mi Smart Band 4 is designed to work with the Mi Fit app. In some regions or newer app versions, Xiaomi may also use the Zepp Life app name for the same type of band management. The steps are generally similar: install the app, sign in, add the band, keep the phone and band close together, and confirm the pairing request on the band screen.
This guide explains the complete connection process in detail. It includes preparation steps, app installation, account sign-in, Bluetooth pairing, confirmation on the band, first-time setup, syncing, notification setup, troubleshooting, and tips for keeping the connection stable.
Why You Need to Connect the Mi Smart Band 4 to Your Phone
The Mi Smart Band 4 can show basic information on its screen, but many of its most useful features require connection to a smartphone. When the band is connected to your phone, it can sync your activity data and receive settings from the app.
Connecting the band allows you to use features such as:
- Step tracking and activity history
- Heart rate data synchronization
- Sleep tracking records
- Workout tracking and exercise logs
- Incoming call alerts
- App notifications
- Alarm settings
- Weather information
- Band display settings
- Firmware updates
- Find band or find phone features
- Time and date synchronization
Without pairing, the band may not show the correct time, may not store long-term fitness records properly in your account, and may not be able to receive alerts from your phone.
Before You Start Pairing
To ensure a smooth setup, prepare your phone and band before starting the connection process.
- Make sure your phone has enough battery power.
- Make sure the Mi Smart Band 4 has enough battery power.
- Turn on Bluetooth on your phone.
- Connect your phone to the internet using WiFi or mobile data.
- Install the latest version of the Mi Fit or Zepp Life app.
- Keep the band close to your phone during pairing.
- Make sure the band is not already paired with another phone.
- Allow the app permissions requested by your phone.
If the band was previously connected to another phone, you may need to unpair it from the old account or reset the band before pairing it with a new phone.
Phone Compatibility
The Xiaomi Mi Smart Band 4 works with many Android and iPhone models. For the best experience, use a phone with a supported operating system version and a working Bluetooth connection.
Older phones, modified operating systems, restricted app permissions, or aggressive battery-saving settings may cause pairing or syncing problems. If the app cannot find the band, update your phone system and app, then try again.
Step 1: Download and Install the Latest Version of the Mi Fit App
Begin by downloading the app required to connect the Xiaomi Mi Smart Band 4. You can scan the QR code provided in the product manual to open the correct app download page. You can also search manually in your phone’s app store.
On Android, open Google Play Store and search for Mi Fit or Zepp Life. On iPhone, open the App Store and search for the same app. Download the official app and install it on your phone.
It is recommended to install the latest available version of the app. A newer version may include improved compatibility, bug fixes, updated device support, firmware update tools, and better synchronization performance.
Once the installation is complete, open the app on your phone so you can continue with the setup process.
Step 2: Open the Mi Fit App and Sign In to Your Account
After installing the app, launch Mi Fit on your smartphone. The app will ask you to sign in before adding a device.
If you already have a Xiaomi, Mi, or compatible account, sign in using your existing account credentials. If you do not already have an account, create a new one by following the instructions shown in the app.
Signing in is important because your account is used to save and sync your fitness data, health history, device settings, goals, and connected device information. It also helps restore your data if you change phones later.
Account Setup Tips
- Use an email address or phone number you can access.
- Remember your login details for future phone changes.
- Choose the correct region if the app asks for it.
- Allow basic app permissions needed for device pairing.
- Use a stable internet connection while signing in.
Once you are logged in, follow the on-screen instructions provided by the app to begin connecting the Xiaomi Mi Smart Band 4 to your phone.
Step 3: Allow Required App Permissions
During setup, the app may request several permissions. These permissions help the app detect the band, connect through Bluetooth, sync data, show notifications, and run properly in the background.
Depending on your phone, the app may ask for:
- Bluetooth permission: Required to find and connect the band.
- Location permission: Required on some Android phones for Bluetooth scanning.
- Notification access: Required if you want app alerts on the band.
- Background activity permission: Helps the app sync continuously.
- Phone permission: May be needed for incoming call alerts.
- Contacts permission: May be needed to show caller names.
- Storage permission: May be needed for some app functions or firmware updates.
If you deny important permissions, the band may still pair, but some features may not work. For example, if notification access is not allowed, the band may not show message alerts.
Step 4: Start Adding the Xiaomi Mi Smart Band 4
After signing in, open the app’s device section. Tap the option to Add Device, Pair Device, or the + button, depending on the app version.
Select Band from the device type list. The app will begin searching for nearby Xiaomi bands.
Keep the Mi Smart Band 4 close to the phone. The distance should be short during pairing, ideally within a few inches or centimeters. This helps the app detect the band faster and reduces connection failure.
Step 5: Keep Bluetooth Turned On
As the app searches for your band, make sure your phone’s Bluetooth function is turned on and working properly. The Mi Smart Band 4 uses Bluetooth to communicate with your phone, so pairing cannot happen if Bluetooth is disabled.
You can usually turn on Bluetooth from your phone’s quick settings panel or from the main settings menu.
If Bluetooth is already on but the app cannot find the band, turn Bluetooth off and then back on again. You can also restart the app and repeat the search.
Step 6: Keep the Devices Close Together
During the pairing process, keep your phone close to the band. Maintaining a short distance between the two devices helps reduce pairing issues and improves the chance of a successful first-time connection.
Avoid pairing in an area with many Bluetooth devices nearby, such as a crowded office or electronics store. Too many nearby devices can make it harder to identify the correct band.
If the app cannot find the band immediately, wait a moment and make sure the band is powered on and within range.
Step 7: Confirm the Bluetooth Pairing Request on the Band
When the Xiaomi Mi Smart Band 4 is detected, the band will vibrate and a Bluetooth pairing notification will appear on its screen. This notification asks you to confirm that you want to pair the band with your smartphone.
Touch the button shown on the band’s display to confirm the pairing request. This step is important because it prevents accidental pairing with the wrong phone.
If you do not confirm the request on the band screen, the pairing process will not complete.
Step 8: Wait for the Connection to Finish
After you confirm the pairing request on the band, the Mi Fit app should complete the connection automatically. Wait until the app shows that the band has been paired successfully.
During this stage, do not close the app, turn off Bluetooth, move the band away from the phone, or restart either device. The app may need a short time to complete setup and synchronize initial information.
Once connected, the phone and band will be linked. The band can begin syncing steps, activity records, heart rate data, sleep records, workout data, alarms, and notifications.
Step 9: Verify Successful Pairing
After pairing is complete, check that the Xiaomi Mi Smart Band 4 appears in the app’s device list. Open the device page and confirm that battery level, settings, and sync options are visible.
You can also test the connection by changing a simple setting in the app, such as vibration alert, screen display options, or alarm settings. If the change appears on the band, the connection is working.
Another way to test the connection is to use the Find Band feature if available. The band should vibrate when activated from the app.
Step 10: Complete First-Time Band Settings
After pairing, review the band settings in the app. This helps you customize the Mi Smart Band 4 for daily use.
Recommended Settings to Review
- Profile information: Set height, weight, age, and gender for more accurate fitness estimates.
- Step goal: Choose your daily step target.
- Heart rate monitoring: Enable or adjust monitoring frequency.
- Sleep tracking: Confirm sleep tracking options.
- App alerts: Choose which apps can send notifications to the band.
- Incoming call alerts: Enable call notifications if desired.
- Alarm: Set vibration alarms.
- Weather: Enable location or weather updates if supported.
- Display settings: Choose which menu items appear on the band.
- Band face: Select or customize the watch face.
Note About Bluetooth and Distance
Note: Make sure Bluetooth is enabled on your phone before starting the connection process. During pairing, hold your phone close to the band to help the devices communicate properly and avoid connection problems.
After pairing is complete, the band can usually stay connected within normal Bluetooth range. However, walls, distance, interference, and phone battery settings may affect connection stability.
What Happens After the Band Is Connected?
Once the Mi Smart Band 4 is connected to your phone, it will begin syncing information with the app. The time and date on the band should update automatically based on your phone.
The app will also store your activity data so you can view daily, weekly, and longer-term records. Depending on your settings, the band can track steps, workouts, sleep, heart rate, and other activity information.
You can now use the app to manage features that are not fully adjustable from the band screen itself.
How to Enable Phone Notifications on Mi Smart Band 4
After pairing, you can choose which phone notifications appear on the band. This may include text messages, calls, app alerts, calendar alerts, and other notifications.
- Open the Mi Fit or Zepp Life app.
- Go to your connected Mi Smart Band 4 device page.
- Select App Alerts or Notifications.
- Allow notification access if your phone asks for permission.
- Select the apps you want to receive alerts from.
- Save the settings.
If notifications do not appear on the band, check that notification access is enabled and that your phone is not blocking the app from running in the background.
How to Keep the Connection Stable
After pairing, the band should reconnect automatically when it is near your phone and Bluetooth is turned on. If it disconnects often, check phone permissions and battery settings.
Connection Stability Tips
- Keep Bluetooth turned on.
- Keep the app installed and signed in.
- Allow the app to run in the background.
- Disable aggressive battery restrictions for the app.
- Keep the band and phone within Bluetooth range.
- Update the app when a new version is available.
- Restart the phone if Bluetooth becomes unstable.
Troubleshooting: Mi Smart Band 4 Not Connecting
If the connection does not complete successfully on the first attempt, check that the Mi Fit app is updated, Bluetooth is turned on, and the band is close enough to the phone. Restarting the app or retrying the pairing process may also help resolve temporary connection issues.
The App Cannot Find the Band
Make sure the band has enough battery and is close to the phone. Turn Bluetooth off and on again. Restart the app and try adding the band again.
The Band Does Not Vibrate During Pairing
The app may not have detected the band yet, or the band may already be connected to another phone. Move the band closer and check whether it needs to be unpaired from another account.
Pairing Request Appears but Pairing Fails
Confirm the request quickly on the band screen. If you wait too long, the request may expire. Restart the pairing process and try again.
Bluetooth Is On but Connection Still Fails
Restart your phone and band if possible. Also check whether the app has Bluetooth and location permissions. On some Android phones, Bluetooth scanning requires location permission.
The Band Was Previously Connected to Another Phone
If the band was paired with another phone or account, unpair it from the old app first. If you cannot access the old phone, you may need to reset the band before pairing with a new phone.
The App Says the Band Is Already Paired
This usually means the band is still linked to another account or phone. Remove it from the previous account, then try pairing again.
The Band Connects but Notifications Do Not Work
Pairing and notifications are separate settings. Open the app and enable notification access. Also allow the app to run in the background and make sure Do Not Disturb mode is not blocking alerts.
How to Reconnect the Band After Disconnection
If the Mi Smart Band 4 disconnects, bring the band close to your phone and open the app. The app should reconnect automatically after a short time.
If it does not reconnect:
- Turn Bluetooth off and on again.
- Close and reopen the app.
- Restart your phone.
- Charge the band if the battery is low.
- Make sure the app is allowed to run in the background.
How to Pair the Mi Smart Band 4 With a New Phone
If you want to connect the band to a new phone, first unpair it from the old phone. Open the app on the old phone, go to the Mi Smart Band 4 device page, scroll down, and choose Unpair.
After unpairing, install the app on the new phone, sign in, and repeat the pairing process. If you use the same account, your previous fitness data may sync again depending on app and account settings.
If you no longer have access to the old phone, reset the band and then pair it with the new phone.
How to Unpair the Xiaomi Mi Smart Band 4
Unpairing removes the connection between the band and the app account. This is useful if you are selling the band, giving it to someone else, changing phones, or troubleshooting connection problems.
- Open the Mi Fit or Zepp Life app.
- Go to the Mi Smart Band 4 device page.
- Scroll down to the bottom of the settings page.
- Tap Unpair.
- Confirm the action.
- Wait for the band to disconnect from the account.
After unpairing, the band can be paired with another phone or account.
How to Reset the Band If Pairing Fails
If the band cannot connect after several attempts, a reset may help. Resetting clears local settings from the band and allows a fresh pairing attempt.
On the band, open the menu and look for settings. Depending on the firmware, the reset option may appear under More, Settings, or Factory Reset. Confirm the reset, then pair the band again through the app.
Resetting may erase unsynced data, so sync the band first if possible.
Firmware Update After Pairing
After the first connection, the app may check for firmware updates. Firmware updates can improve performance, fix bugs, add features, or improve connection stability.
If a firmware update is available:
- Keep the band close to the phone.
- Keep Bluetooth turned on.
- Make sure the band has enough battery.
- Do not close the app during the update.
- Wait until the update finishes completely.
If the update fails, restart the app and try again when the band has enough battery.
Common Mistakes to Avoid
- Trying to pair without turning on Bluetooth.
- Holding the band too far from the phone during pairing.
- Closing the app before setup finishes.
- Ignoring the confirmation request on the band screen.
- Trying to pair a band still linked to another account.
- Denying required Bluetooth or location permissions.
- Using an outdated app version.
- Not allowing the app to run in the background.
Quick Connection Summary
- Charge the Xiaomi Mi Smart Band 4.
- Turn on Bluetooth on your phone.
- Connect your phone to the internet.
- Download and install the Mi Fit or Zepp Life app.
- Open the app and sign in to your account.
- Allow required app permissions.
- Tap Add Device and choose Band.
- Keep the band close to the phone.
- Wait for the app to find the band.
- Confirm the pairing request on the band screen.
- Wait for the app to complete setup.
- Customize notifications, alarms, goals, and display settings.
Conclusion
Connecting the Xiaomi Mi Smart Band 4 to your phone is required before you can use its main smart and fitness features. The process starts by installing the Mi Fit or Zepp Life app, signing in to your account, turning on Bluetooth, adding the band from the app, and confirming the pairing request directly on the band screen.
For the best result, keep the phone and band close together during setup, make sure Bluetooth is enabled, allow the necessary app permissions, and use the latest version of the app. If pairing fails, restart the app, check Bluetooth, move the devices closer, and confirm that the band is not still paired with another phone.
By completing these steps carefully, your Xiaomi Mi Smart Band 4 will be properly connected to your smartphone and ready for daily use, activity tracking, health monitoring, sleep tracking, workout recording, notifications, and smart features.