How sleep detection works:

The earbuds judge whether the user has fallen asleep by their movements. If within half an hour, the user barely moves, the earbuds determine that they have fallen asleep and begins generating sleep data. If they turn over frequently or make big head movements while sleeping, it may cause the earbuds to misjudge that they are still awake, so no sleep data will be recorded.

Why is the sleep detection data inaccurate? 

Sleep data is acquired via the earbuds according to the state of the person wearing the earbuds when asleep or awake, so as to generate sleep data in the soundcore app. Since each person is different, there may be an error in the detection.

To fix the issue of no sleep data being recorded, you can try the following steps:

1. The latest sleep data needs to be updated by connecting the earbuds and syncing them to the soundcore app.

2. You don't need to open the soundcore app every time you go to bed to sync data.

3. You'll need to connect your earbuds to the soundcore app on a regular weekly basis to sync your data.