
The Xiaomi Mi Band series is an affordable fitness tracker that can monitor daily activity and health metrics such as blood oxygen levels, stress, and sleep. The Mi Band 2 can track sleep using the sleep assistance option, which records sleep data such as sleep duration, awake and asleep times, and heart rate. This data can be synchronized with third-party apps such as Google Fit and Sleep as Android, although some users have reported issues with data synchronization. To enable sleep tracking, users must wear the band on their wrist while sleeping, as the device uses an accelerometer and heart rate sensors to detect body movements and convert them into valuable information on the sleep cycle.
| Characteristics | Values |
|---|---|
| Sleep tracking features | Sleep duration, sleep and wake times, sleep score, sleep stages, sleep breathing quality, sleep quality analysis, sleep regularity |
| Sleep tracking technology | Built-in accelerometer to detect motion, heart rate sensor, PPG sensor, gyroscope |
| Sleep tracking apps | Mi Fit, Google Fit, Sleep as Android, Zepp Life |
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What You'll Learn

Track sleep using the Mi Fit app
The Xiaomi Mi Band series is an affordable fitness tracker that can monitor daily activity and several health metrics, including sleep. The Mi Band 2, in particular, is capable of tracking sleep using the Mi Fit app. Here's a step-by-step guide on how to track your sleep using the Mi Fit app with the Mi Band 2:
Set Up Your Mi Band 2
To begin, make sure your Mi Band 2 is set up correctly and paired with your smartphone via Bluetooth. Download and install the Mi Fit app on your phone, and create an account if you haven't already. Follow the on-screen instructions to pair your Mi Band 2 with the Mi Fit app.
Enable Sleep Tracking
In the Mi Fit app, enable the "Sleep Assistance" or "Sleep Tracking" feature. This will allow the band to start monitoring your sleep when you go to bed. You may also need to enable the "Lift wrist to view info" option in the app for the Mi Band 2.
Wear the Band While Sleeping
Remember to wear your Mi Band 2 to bed. The band should be worn on your wrist to accurately detect your body movements and heart rate during sleep. The band uses an accelerometer to sense body movements and a heart rate sensor to estimate when you fall asleep.
Review Sleep Data
In the morning, open the Mi Fit app to review your sleep data. The app will collate the readings from your sleep cycle, including sleep duration, sleep stages (light, deep, and REM), and awake times. You can view this data in the app to gain insights into your sleep patterns and quality.
Sync with Other Apps (Optional)
If you use other health or fitness apps, such as Google Fit or Sleep as Android, you may want to sync your sleep data with them. However, keep in mind that manual sync may be required for some apps, as automatic sync is not always supported. Refer to the specific app's instructions for details on how to sync Mi Band 2 sleep data.
By following these steps, you can effectively use your Mi Band 2 and the Mi Fit app to track and analyze your sleep patterns, which can help you understand and improve your sleep quality.
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Sync sleep data with Google Fit
The Xiaomi Mi Band series is an affordable, yet powerful fitness tracker. It can track daily activity and health metrics like blood oxygen levels, stress, and the hours and minutes spent asleep. The Mi Band uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep.
If you want to sync your sleep data with Google Fit, you can follow these steps:
- Open the Mi Fit app on your phone and tap the profile button on the lower right corner.
- This will take you to an overview of your account, where you can see the devices paired with Mi Fit, and other settings.
- Scroll down and tap 'Add Accounts'.
- Mi Fit will offer to automatically pair with WeChat and Google Fit. Select the Google Fit option and confirm the sync.
- You will be asked to review and approve permissions to allow Google Fit to import health data from your Mi app.
- Once connected, your Mi Band sleep data will automatically sync with Google Fit.
Please note that it can sometimes take a few hours for Google Fit to display your most recent data, even up to 24 hours after the initial pairing.
With Google Fit, you can have a central location for all your health data, as it collects information from dozens of popular fitness apps. You can view your sleep data on Google Fit by navigating to your activity/timeline and selecting 'Show Graph Details' or 'More Details'. From here, you can access a drop-down menu to select 'Heart Rate' and view your sleep data.
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Understand sleep data
The Xiaomi Mi Band series is a capable sleep tracker that can help you understand your sleeping habits better. The Mi Band uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep. The accelerometer in the Mi Band detects slight motions and gravity changes, and the band worn on the wrist converts these wrist movements into sleep patterns. It concludes that having zero body movements is a state of sleep, and rigorous movements indicate awakening from sleep. The Mi Band also has a gyroscope that detects angular displacement like tilting and rotation.
The Mi Band line tracks several sleep metrics, including common stats like sleep duration, sleep and wake times, and sleep quality analysis. It also provides a sleep score, a 0-100 score quantifying overall sleep quality, derived from sleep stage duration, total sleep, and other factors. The higher the score, the better your sleep quality. The Mi Band models monitor three sleep stages: Deep, Light, and REM sleep. It also separately tracks naps taken during the day and accounts for Deep and Light sleep stages.
Mi Bands with blood oxygen sensors can monitor breathing quality, providing the blood oxygen saturation percentage. This feature can be enabled in the Zepp Life app, which is recommended for tracking sleep with the Mi Band. The app provides a summary of your sleep information, including the sleep score, sleep duration, and deep sleep total, along with a graph displaying sleep stages.
While the Mi Band provides valuable insights into your sleep patterns, it is important to note that it may lack nuance in recognizing sleep stages. All fitness trackers have a margin of error, so focusing on general trends over time rather than spot accuracy is a better approach to interpreting sleep data. Additionally, the Mi Band may not detect short naps and has been reported to have less accurate sleep tracking compared to other devices like the Fitbit and Apple Watches.
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Track sleep with third-party apps
The Xiaomi Mi Band 2 can be used with third-party apps to track your sleep. One option is to use the Sleep as Android app, which integrates with the Mi Band 2 to provide sleep tracking features. To enable this integration, you will need to purchase and download the Mi Band & Tools app, which is a paid app. Once you have both apps installed, go to the Settings > Wearables > Sleep Tracking menu in Sleep as Android and enable the "Use Wearables" option. You can also enable heart rate monitoring in Sleep as Android by going to Settings > Wearables > Heart Rate Monitoring. This will allow the app to collect your heart rate data during sleep tracking.
Another third-party app that can be used for sleep tracking with the Mi Band 2 is Notify & Fitness for Mi Band. This app offers advanced sleep tracking features and can be used to connect to Sleep as Android. It is important to note that some users have reported issues with the integration between Sleep as Android and the Mi Band 2, so you may need to experiment with different settings and configurations to find what works best for you.
In addition to Sleep as Android and Notify & Fitness for Mi Band, there are other third-party apps that you can use for sleep tracking with the Mi Band 2. One option is the Mi Fit app, which can track your movements with the accelerometer and provide basic sleep tracking features. Another app to consider is Mi Band Master, which offers sleep tracking capabilities and can even track naps. However, it's worth noting that the free version of this app only allows you to access data from the last 5 days.
When choosing a third-party app for sleep tracking with your Mi Band 2, it's important to consider your specific needs and preferences. Some apps may offer more advanced features and detailed data analysis, while others may be more user-friendly or have better integration with your device. It may be helpful to read reviews and compare the features of different apps before making a decision.
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Track sleep with the Zepp Life app
The Xiaomi Mi Band series is an affordable and capable sleep tracker. The Mi Band line tracks sleep metrics, including common stats like sleep duration, sleep and wake times, and sleep quality analysis. It also provides a sleep score out of 100, which is derived from your sleep stage duration, total sleep, and other factors.
To track your sleep with the Zepp Life app, you must first download the app and pair it with your Mi Band 2 device. The app is available on iOS and Android devices. Ensure that your Mi Band 2 is charged and within Bluetooth range of your phone. Open the Zepp Life app, and follow the on-screen instructions to pair the device with your phone.
Once paired, you can start tracking your sleep. Before you go to bed, ensure that your Mi Band 2 is securely fastened to your wrist, as the device uses sensors to detect body movements during sleep. When you are ready to sleep, you can manually start sleep tracking within the app, or the device will automatically detect when you have fallen asleep.
In the morning, you can view your sleep data within the Zepp Life app. The app will provide an overview of your sleep information, including your sleep score, sleep duration, and deep sleep total. You can tap on the card to access more detailed sleep data, including sleep stages and sleep breathing quality (if your model has a blood oxygen sensor).
The Zepp Life app also provides a sleep regularity feature, which displays your previous night's sleep compared to the last week's trend. This can help you identify any patterns or issues with your sleep.
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Frequently asked questions
The Mi Band 2 uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep. The accelerometer detects slight motions and gravity changes, and the heart rate sensor detects when your heart rate slows down, indicating that you are in a state of light sleep.
The Mi Band 2 tracks sleep duration, asleep and awake times, and sleep quality analysis. It also provides a sleep score out of 100 that quantifies overall sleep quality, taking into account sleep stage duration and other factors.
You can view your sleep data on the Mi Band 2 through the Mi Fit app. The app collates the readings of your sleep cycle and notifies you of the results when you wake up.
Yes, you can sync your sleep data to apps like Google Fit and Sleep as Android (SAA). However, keep in mind that you may need to manually open these apps after your band syncs the sleep data to ensure successful synchronization.











































