The Xiaomi Watch S1 Active doesn't record sleeping data or the sleeping data is not accurate.

If the Xiaomi Watch S1 Active doesn't record sleeping data or the sleeping data is not accurate, please refer to the following troubleshooting methods:
1. Please check if the device’s firmware is updated to the latest version by opening the Mi Fitness app and going to [Device] >> [Update] >> check it here;
2. Please ensure the Mi Fitness app is updated to the latest version by opening the Mi Fitness app and going to [Profile] >> look for and check [Version];
3. Please try to temporarily unbind the watch from the app. After rebinding, turn on auxiliary sleep monitoring and see if the problem is improved;
4. Please confirm your sleep period. Sleep time that is too short (less than 20 minutes) will result in no sleep data being recorded;
5. If the watch is worn too loosely or shakes significantly, it will cause abnormal sleep monitoring during sleep. It is recommended that you wear your device steadily while sleeping;
6. If you fall asleep while riding in a vehicle, your sleep data will not be recorded due to bumps in the vehicle;
7. If the watch is in a relatively quiet state that is similar to the sleeping scene, the sensor may be judged to be sleeping, resulting in errors in the time to fall asleep;
8. Ensure that the heart rate monitoring feature is not turned off by opening the Mi Fitness app and going to [Device] >> [Heart rate] >> [Continuously monitoring] >> check it here;
9. Please check that you have selected the correct region by opening the Mi Fitness app and going to [Profile] >> [Settings] >> [Region]. In the meanwhile, make sure that the region on your smartphone is the same one as your watch;
10. Please reinstall the app and see if the issue persists;
11. Please restore the watch to the factory setting by entering the main interface of the watch and sliding up from the bottom with one finger >> [Settings] >> [System] >> [Factory Reset] >> [].
We hope the above information is helpful. If the issue still occurs, please open the Mi Fitness app and go to [Profile] >> [Feedback] >> [Other]. After submitting user feedback, please have some patience and wait for the future updates.