The Xiaomi Mi Band series is an affordable, multi-purpose tool that can track daily activity and health metrics. The sleep tracker is turned off by default to save battery life, but it can be switched on. To activate the sleep tracker on the Xiaomi Mi Band 2, you can download the Mi Fit app from the Play Store and select the sleep assistant feature in the user interface. You can also use third-party apps such as Sleep as Android, but this requires the purchase of Tools & Mi Band. Once activated, the Mi Band 2 will track your sleep cycle and help you understand your sleeping habits.
| Characteristics | Values |
|---|---|
| Sleep tracking accuracy | 75% |
| Sleep tracking apps | Mi Fit, Sleep as Android, Zepp Life, Xiaomi Wear |
| Sleep tracking capabilities | Track sleep cycle, sleep duration, sleep quality, sleep regularity, heart rate, blood oxygen saturation levels |
| Sleep tracking process | Wear the band on the wrist, sync with a smartphone, enable sleep assistant feature |
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What You'll Learn

Download the Mi Fit app
To activate sleep tracking on your Mi Band 2, you'll need to download the Mi Fit app. This is the official app that syncs with your Xiaomi smart band.
To get started, download the Mi Fit app from the Play Store. Once you've installed the app, open it up and select the Profile option in the lower right corner. Here, you'll need to select your Mi Band device by name.
In the user interface, you'll see a heart rate monitoring box. Select this, and then choose the sleep assistant feature. Make sure to activate it so that it can start generating information on your sleep cycle.
The Mi Fit app will allow you to view your sleep activity, including the duration and quality of your sleep, as well as your heart rate during sleep. It's important to note that the sleep tracker on the Mi Band is turned off by default to save battery life, so remember to switch it on.
Additionally, you can also try other apps like Sleep as Android, which supports the Mi Band 2. This app also provides sleep tracking features and can be integrated with the Mi Band.
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Set up sleep assistant feature
To set up the sleep assistant feature on the Mi Band 2, you will need to download the Mi Fit app from the Play Store and install it on your smartphone. The Mi Fit app is the official app that syncs with the Xiaomi Mi Band 2.
Once you have the app, follow these steps:
- Turn on your Mi Band 2 by tapping on it.
- Open the Mi Fit app on your phone and select the "Profile" option, usually in the lower right corner.
- Select the device name of your Mi Band 2 in the app.
- In the user interface, select the "Heart Rate Monitoring" box.
- In this menu, you will find the "Sleep Assistant" feature. Turn it on.
Now, when you wear your Mi Band 2 to sleep, it will track your sleep cycle and heart rate. The data will be available for you to view in the Mi Fit app. The Mi Band 2 uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep.
You can also try a third-party app like Sleep as Android, which supports the Mi Band 2. To use Sleep as Android, you will need to purchase and download the Tools & Mi Band app from the Play Store. Then, follow these steps:
- Enable "Wearables" in the Settings of Sleep as Android.
- Go to Tools & Mi Band > Navigation Drawer > Heart Rate > Settings.
- Set the interval for heart rate measurement.
- Enable heart rate monitoring in Sleep as Android: Settings > Wearables > Heart Rate Monitoring.
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Track sleep with Sleep as Android
To track sleep with Sleep as Android using the Xiaomi Mi Band 2, you will need to download the Mi Fit app and Mi Band Tools. Once you have downloaded the apps, you can follow the steps below:
Set up the Mi Band 2
- Switch on the band by tapping on it to access the home screen.
- Open the Mi Fit app and select the Profile option in the lower right corner.
- Select your device name.
- Select the heart rate monitoring box.
- Select the sleep assistant feature and activate it.
Set up Sleep as Android
- Go to Settings > Wearables > Heart rate monitoring and enable heart rate monitoring.
- Go to Tools & Mi Band > Navigation drawer > Heart rate > Settings and set the interval at which you want your heart rate to be measured.
- Go to Settings > Wearables > Sleep Tracking and check "Use Wearables".
Tips for improving sleep tracking accuracy
- Ensure that the band is worn on your wrist, with a firm, snug fit.
- In the Mi Fit app, enable the "Lift wrist to view info" option.
- In the Zepp Life app, increase the heart rate measurement frequency by going to Profile > Health monitoring > Assisted sleep monitoring and toggling this feature on.
The Mi Band 2 uses a built-in accelerometer and heart rate sensors to detect body movements during sleep and estimate when you fall asleep. While the Mi Band 2 is not the most in-depth sleep-tracking solution, it can still provide useful data to help you improve your sleep routine.
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Improve sleep tracking accuracy
To improve the sleep-tracking accuracy of your Mi Band 2, you can try the following:
Firstly, ensure that you are wearing the band correctly. It should be worn on the wrist, with a firm fit that is snug but not too tight. This will ensure the device can accurately detect your body movements and heart rate during sleep.
Next, you can adjust the heart rate measurement frequency in the settings. By default, the interval may be set to more than five minutes, which can be too long for accurate sleep tracking. In the Zepp Life app, go to the Profile tab, select your Mi Band device, choose Health monitoring, and then toggle on Assisted sleep monitoring. This will increase the frequency of heart rate measurements while you sleep.
Additionally, consider using a recommended sleep tracking app like Zepp Life, which provides a comprehensive summary of your sleep information on its home screen. The app also includes a Sleep quality analysis feature, which can offer insights and suggestions to improve your sleep.
While the Mi Band 2 may not be the most advanced sleep-tracking solution, by following these steps, you can maximise its accuracy and gain valuable insights into your sleep habits. It is important to note that all fitness trackers have a margin of error, so focus on the general trends over time rather than spot accuracy.
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View sleep activity
To view your sleep activity on the Mi Band 2, you will need to install a compatible app on your smartphone. The official app for the Xiaomi Mi Band series is the Mi Fit app, available on the Play Store. You can also try third-party apps such as Sleep as Android, which supports the Mi Band 2 with newer firmware.
Once you have installed the Mi Fit app, open the app and select the Profile option in the lower right corner. Then, select your Mi Band device under the "My Devices" section.
In the user interface, you will see a heart rate monitoring box. Select this, and then choose the sleep assistant feature. Here, you can activate sleep tracking and view your sleep activity. The app will display information on your sleep cycle, including sleep duration, sleep and wake times, and sleep quality analysis.
If you are using Sleep as Android, you will need to purchase and download the Tools & Mi Band app to enable integration. Once you have both apps installed, go to Settings > Wearables > Use Wearable in Sleep as Android, and then navigate to Tools & Mi Band > Navigation Drawer > Heart Rate > Settings. Here, you can set the interval at which you want your heart rate to be measured during sleep tracking.
It is important to note that the Mi Band should be worn on the wrist, with a firm position, to get accurate sleep tracking results.
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Frequently asked questions
You will need to download the Mi Fit app from the Play Store and keep it open on your smartphone. Put on your Mi Band 2 and turn it on. Open the Mi Fit app and select the Profile option. Select your device name. Select the heart rate monitoring box and then select the sleep assistant feature and activate it.
The official app for the Mi Band 2 is the Mi Fit app. However, some other apps that can be used for sleep tracking with the Mi Band 2 include Sleep as Android, Notify & Fitness for Mi Band, and Zepp Life.
The Mi Band 2 uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep. The device will then track your sleep cycle from when you fall asleep to when you wake up, including any sleep during the daytime if you sleep for a longer period.
The Mi Band 2 sleep tracker gives a 75% accurate reading about the sleep cycle and heart rate. While it is not the most in-depth sleep-tracking solution, you can still use the data it gathers to improve your night routine.
Put on your Mi Band 2 before you go to sleep. After you wake up, sync it with your phone.



































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