Gina Johnson
The Mi Band 3 is a wearable device that can track your sleep. It is the third iteration of the Mi Band series by Xiaomi. The device can be worn on the wrist and uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep. The Mi Band 3 can be used in conjunction with third-party apps such as Sleep as Android, which provides additional features like smart alarms. While the Mi Band 3 offers sleep tracking capabilities, it may not be as accurate as other dedicated sleep tracking devices or apps.
| Characteristics | Values |
|---|---|
| Sleep tracking accuracy | 70% to 78% |
| Sleep tracking app | Sleep as Android |
| Sleep tracking features | Sleep duration, sleep quality analysis, sleep regularity, sleep breathing quality |
| Sleep tracking technology | Accelerometer, heart rate sensors |
| Additional features | Heart rate measurement, alarm vibration |
| Limitations | Does not recognise different stages of sleep, does not track sleep if not worn overnight |
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What You'll Learn
Sleep tracking accuracy
The Mi Band 3 is supported by Sleep as Android and has features such as sleep tracking, heart rate measurement and alarm vibration on your wrist. However, the accuracy of sleep tracking is questionable. Some users have reported that the Mi Band 3 does not recognise when they wake up in the middle of the night, and only labels a time period as "Awake" if they get up and walk around. It also does not seem to recognise shift work sleep patterns.
The Mi Band 3 is said to be as reliable as the Fitbit Sense 2 when it comes to sleep tracking, but it lacks nuance in recognising sleep stages. The total sleep duration is usually accurate, but the band has an accuracy rate of only 70% to 78% in tracking sleep.
The Mi Band series uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep. The band detects body movements during sleep and identifies when you are in the phase of deep sleep based on low body displacement and a gradual dip in heart rate. It also tracks sleep breathing quality through blood oxygen sensors.
To improve the accuracy of sleep tracking, it is recommended to wear the band correctly, with a snug fit on the wrist, not too tight or loose. Additionally, enabling the "Assisted sleep monitoring" setting in the Zepp Life app can increase the heart rate measurement frequency during sleep.
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Sleep quality analysis
The Mi Band series uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep. The Mi Band 3 is supported by Sleep as Android, which provides sleep tracking, heart rate measurement, and alarm vibration on your wrist. The Mi Band line tracks several sleep metrics, including sleep duration, sleep and wake times, and sleep breathing quality.
The Mi Band series is not the most in-depth sleep-tracking solution on the market. It lacks nuance in recognizing sleep stages and has an accuracy rate of 70% to 78%. However, it can still be a useful tool to help you understand your sleeping habits and make adjustments to improve your sleep quality.
To improve the accuracy of your Mi Band's sleep tracking, it is recommended to wear the band correctly. It should be snug on your wrist but not too tight or loose. Additionally, you can enable settings like "Assisted sleep monitoring" in the Zepp Life app to increase the heart rate measurement frequency when the Mi Band detects you’re asleep.
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Sleep regularity
The Mi Band 3 is a good option for those who want to track their sleep regularity and get an overview of their sleep trends. The Mi Band series uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep. The band can be enabled to monitor breathing quality and provide blood oxygen saturation information during sleep.
The Mi Band 3 is fully supported by Sleep as Android, and it offers sleep tracking, heart rate measurement, and alarm vibration on the wrist. However, some users have reported issues with the Mi Band 3's sleep tracking accuracy, stating that it only tracks movement every 10 seconds or so, which can lead to discrepancies in the data.
To improve the accuracy of sleep data, it is recommended to wear the band correctly, with a snug fit on the wrist, not too tight or too loose. Additionally, enabling the "Assisted Sleep Monitoring" feature in the Zepp Life app can increase the heart rate measurement frequency during sleep, providing more detailed information.
While the Mi Band 3 can provide valuable insights into sleep regularity, it may not be as accurate as other dedicated sleep tracking devices like Fitbit or Apple Watches. It is important to remember that sleep trackers provide readings of total sleep time, but further analysis of the data may require medical intervention.
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Sleep breathing quality
The Mi Band series uses a built-in accelerometer to detect motion and a heart rate sensor to estimate when you fall asleep. The Mi Band 3 and 4 cannot track the REM sleep cycle, but the latest Mi Band 5 uses the Accelerometer, Gyroscope, PPG sensor, and respiratory data such as blood oxygen to track the REM cycle. The Mi Band 6 can also track sleep breathing quality, but the feature is still in beta. The Mi Band 8 Pro, Xiaomi Watch S3, and Xiaomi Watch 2 also have an enhanced sleep monitoring algorithm that integrates blood oxygen and breath data to allow for a more comprehensive analysis of sleep patterns.
The Mi Band models with blood oxygen sensors can monitor breathing quality by providing the blood oxygen saturation percentage. This is essentially the same as the data provided by other fitness trackers and smartwatches. To get a breathing quality score, you need to enable the "Sleep breathing quality monitoring" setting. This will provide useful blood oxygen saturation information during sleep.
The Mi Smart Band 7 Pro also monitors your breathing patterns during sleep, adding another layer of valuable information to your sleep tracking data. It accurately detects both your sleep and wake phases and breaks down your total sleep time into individual phases.
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Compatibility with other apps
The Mi Band 3 is compatible with Sleep as Android, an app that provides sleep tracking, heart rate measurement, and alarm vibration on your wrist. However, some users have reported issues with the Mi Band 3's compatibility with Sleep as Android, particularly after updating their phones to Android Pie. In such cases, updating Sleep as Android to the latest version is recommended.
The Mi Band 3 also works with other apps like Tools & Mi Band and Notify & Fitness for Mi Band, which serve as intermediaries to connect Sleep as Android with the Mi Band 3. These apps are necessary because the Mi Band 3 does not have a public API, making direct connections challenging.
For tracking sleep, the preferred Xiaomi app is Zepp Life, which offers a comprehensive view of health information, including sleep data. The Xiaomi Wear app is another option for viewing sleep information, but Zepp Life is favoured for its convenient display of health metrics.
While the Mi Band 3 offers sleep tracking capabilities, it may not be as comprehensive as other devices. If you are specifically interested in accurately measuring sleep stages, other devices like the Fitbit or Apple Watch may provide more detailed insights.
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Frequently asked questions
You can set up sleep tracking on your Mi Band 3 by enabling "use wearable" and "heart rate monitoring" under the settings for Sleep as Android. You can also use third-party apps like Tools & Mi Band or Notify & Fitness for Mi Band.
The sleep tracking on the Mi Band 3 has an accuracy rate of around 70% to 75%. While it can provide valuable insights into your sleep patterns, it may not be able to differentiate between different stages of sleep accurately.
To improve sleep tracking accuracy, ensure that you wear the band correctly. It should be snug on your wrist but not too tight or loose. Additionally, consider using the assisted sleep monitoring feature in the Zepp Life app, which increases the heart rate measurement frequency when you are asleep.
