Herbie Murray
The Xiaomi Mi Band 4 is a budget-friendly fitness tracker that offers a range of features, including sleep tracking. While it may not be the most accurate sleep tracker on the market, it provides a good overall experience, especially considering its low price point. The Mi Band 4 uses a heart rate sensor to detect sleep automatically and provides sleep statistics through the Mi Fit app, allowing users to access their sleep data over different periods for analysis and improvement.
| Characteristics | Values |
|---|---|
| Sleep tracking accuracy | 70% |
| REM sleep tracking | Not available |
| Daytime sleep tracking | Not available |
| Sleep tracking method | Heart rate sensor |
| Sleep tracking data | Duration of sleep, sleep quality analysis, overall sleep score |
| Sleep tracking comparison | Sleep pattern compared with other people for an objective result |
| Sleep tracking app | Mi Fit app |
| Sleep tracking accuracy issues | Does not recognize when the user is awake in bed |
| Sleep tracking accuracy issues | Does not detect when the user wakes up in the middle of the night |
| Sleep tracking accuracy issues | Does not detect short power naps |
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What You'll Learn
Mi Band 4's sleep tracking accuracy
The Mi Band 4 is a fitness tracker that offers sleep tracking. It is water-resistant, has a heart rate monitor, workout tracking, text and call notifications, and an impressive battery life of up to three weeks. It is also very affordable, with all these features available for $40.
However, the device has been criticized for its lack of accuracy in sleep tracking. One review noted that the Mi Band 4 did not recognize that the user was awake until they got out of bed and walked to the bathroom. On another occasion, the device failed to detect that the user had woken up in the middle of the night, concluding that they had slept for over 10 hours when they had, in fact, briefly woken up. Another user noted that the device showed a very low percentage of REM sleep.
The Mi Band 4 also provides limited advice on how to improve sleep quality. One user noted that the tips were oddly worded and fear-mongering, with vague suggestions such as not "straining oneself" and keeping a "good mood."
Despite these limitations, the Mi Band 4 has been praised for its ability to detect when a user falls asleep and wakes up during the night. One user noted that the device was able to accurately differentiate between deep sleep and light sleep, possibly by measuring heart rate and movement.
Overall, while the Mi Band 4 offers sleep tracking capabilities, its accuracy may vary, and it may not provide comprehensive insights or advice for improving sleep habits.
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How to set up sleep tracking
The Xiaomi Mi Band 4 supports 24/7 heart rate monitoring and sleep tracking. It can track light and deep sleep as well as heart rate during sleep to help you adjust your sleep patterns.
To set up sleep monitoring on the Mi Band 4, follow these steps:
- Open the Mi Fit app on your phone and ensure that your Mi Band 4 is synced.
- Navigate to the settings menu within the app.
- Locate the "Sleep Assistant" or "Sleep Detection" option and enable it.
- You may be prompted to adjust the detection frequency to your preference.
- Once enabled, the Mi Band 4 will automatically track your sleep during the night hours.
Note that the Mi Band 4 does not track sleep in real-time. Instead, it gathers raw data during the night and calculates sleep metrics after your sleep has ended. This data is then processed by the Mi Fit app, which you can view by opening the app and syncing your band.
Additionally, the Mi Band 4 may not accurately detect when you are awake. For example, if you wake up and read in bed, the band may not recognize you as being awake until you get up and walk around.
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Limitations of sleep tracking
The Xiaomi Mi Band 4 supports 24/7 heart rate monitoring and sleep tracking. It can track light and deep sleep as well as heart rate during sleep to help you adjust your sleep patterns. However, it cannot track the REM stage of sleep. The Mi Band 4's sleep tracking function works only at night and cannot be detected during the day. Its main judgment is based on movement variables from falling asleep to sleeping to waking up.
While the Mi Band 4 offers sleep tracking, reviews suggest that the estimations are not always accurate. For example, it may not recognize when a user is awake in bed reading, or detect when a user has briefly woken up during the night. The Mi Fit app provides few actionable insights to help users improve their sleep habits.
The Mi Band 4 is a good option for users seeking a cheap, easy-to-wear, and lightweight fitness tracker that also tracks sleep. However, if you are looking for a device to help improve your sleep habits, the Mi Band 4 may not be the best option. While it can provide data on your sleep patterns, it may not offer the same level of insights and recommendations as other sleep tracking devices or apps.
Additionally, the Mi Band 4 has a limited number of sports modes and exercise types that it can track. If you are an athlete or highly active individual, you may find that the Mi Band 4 does not meet your needs in terms of exercise tracking and improvement.
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Comparison with other sleep trackers
The Mi Band 4 is a great value, inexpensive fitness tracker that offers sleep tracking. However, it may not be the best option if you want to improve your health habits. While it does track sleep, the estimations are not always accurate. For example, it may not recognize when you are awake in bed or briefly awake in the middle of the night. The Fitbit Inspire HR, on the other hand, had no problem identifying this behaviour.
The Mi Band 4 is a good option if you are on a budget as it is feature-rich and costs less than half the price of most $100 fitness trackers. It is also easy to wear, discreet, and lightweight. The Mi Band 4 provides basic sleep tracking features such as sleep duration, sleep and wake times, and sleep quality analysis. It also compares your sleep with other users, telling you if you slept better or worse than a certain percentage of users.
The Mi Band 6 is another option that is said to be as reliable as the Fitbit Sense 2 when it comes to sleep tracking. It provides more in-depth sleep tracking features such as sleep breathing quality and sleep regularity. It also has a feature called Assisted Sleep Monitoring, which increases the heart rate measurement frequency when it detects that you are asleep.
The Mi Band 4 has been compared to other trackers such as the Garmin Vivosmart 3 and the Fitbit Inspire HR. The Fitbit Inspire HR seems to be more accurate in detecting when the user is awake in bed. The Mi Band 4 has also been compared to the Mi Band 3, which has a monochrome display, while the Mi Band 4 has a full-colour OLED touchscreen.
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How sleep tracking works
The Mi Band 4 is a fitness tracker that offers sleep tracking. It uses the heart rate sensor to detect sleep automatically, so there is no way to force it into sleep-tracking mode. This means that it cannot track daytime naps or sleeping in. The Mi Band 4 does not track the REM stage of sleep, unlike the latest Mi Band 5, which uses the Accelerometer, Gyroscope, PPG sensor, and respiratory data such as blood oxygen to track the REM cycle.
The Mi Band 4's sleep tracking accuracy rate is around 70%, which is slightly better than Fitbit but not as good as the Fitbit Inspire HR. The Mi Band 4 is also unable to distinguish between when the user is lying in bed and when they are asleep.
The Mi Band 4 is a cheap, easy-to-wear, lightweight, and discreet device that offers great value. It has a colourful and vivid 0.95-inch full-colour OLED touchscreen with a 400-nit peak brightness. The Mi Band 4 is fully featured with smartwatch functionality, including customizable alerts for a variety of phone- and non-phone-related functions, such as incoming calls, texts, app alerts, emails, events, and alarms.
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Frequently asked questions
Sleep tracking is a feature of the Mi Band 4 that allows users to monitor their sleep patterns and quality.
The Mi Band 4 uses a heart rate sensor to detect sleep automatically. It also provides sleep tracking capabilities through the Mi Fit app.
The sleep tracking accuracy rate is around 70% for the Mi Band 4. While it is slightly better than competitors like FitBit, there is room for improvement in terms of accuracy.
No, the Mi Band 4 does not track sleep during the daytime. It is unable to track naps or sleeping in during the day.
To set up sleep tracking, you need to install the Mi Fit app on your phone and create an account. Then, hit the + button to add your Mi Band 4 to the app.
