For people that their sleep data is way off or have a gap most night, try this.

[Mat_G_Gagnon]

Hi,

With my Samsung Watch 7 Ultra, I had some issues with the sleep data. There was always a large gap in the middle of the night, or it only started to register my sleep about 3 hours later.

Here's what I did, and it fixed my issue.

I hope it works for you as well.

I followed the steps in this link but skipped step 9.

https://us.community.samsung.com/t5/Galaxy-Watch/Sleep-Tracking-not-working-it-works-but-its-highly-...

That helped, but what ultimately fixed the issue was clearing the cache and storage of the Samsung Health app on my phone.

Since then, I haven't had any gaps in my sleep data for the past two nights, and all the readings, such as REM, deep sleep, etc., seem accurate now.

[Helenna]

Hi Mat_G_Gagnon,

We are good to hear that you resolved the issue by yourself and appreciate your efforts.

Thank you for sharing this useful information with us here and helping others.

[Mat_G_Gagnon]

It's my pleasure, and hopefully this fix will work for others.

Thanks also for your efforts and help in this matter. 😉