Why is the data of sleep and wake-up on the Xiaomi Smart Band 9 Pro inaccurate?

The reasons for inaccurate data of sleep and wake-ups are listed below:
1. If the band itself does not record sleep or the detection time is less than the actual sleep time, your wrist movements are more during sleep, and the sensor determines that you are not sleeping, resulting in no record or a shorter recorded sleep time;
2. If the band itself records more sleep than the actual sleep time, your wrist movements are less during non-sleep time and you are in a very quiet state (playing with your phone before going to bed or sitting and watching a movie, etc. will be judged as falling asleep), causing the sensor to detect it as a sleeping state;
3. Please check whether you are wearing a double-loop genuine leather black and white strap. When using this strap, it is easy to cause the back shell of the band to not directly contact the skin, which will affect the wearing detection and cause false detection of sleep.
Note:
1. The algorithm continues to optimize possible sleep missed detection and false detection scenarios;
2. For quiet scenes when not sleeping, the detection accuracy will be further improved with the promotion of joint detection of multiple sensors and auxiliary equipment.