Why is my Apple Watch Ultra 2 showing incorrect sleep data?

Apple watch has consistently tracked my sleep for last 10 months, but a couple of weeks ago it started showing blocks of sleep labelled Asleep, which is not in stages definitions, what does this mean?

Any ideas why it has changed. In example below it was start of my nights sleep.


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Posted on Dec 22, 2024 02:01 AM

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Dec 25, 2024 05:09 AM in response to dave.works

I have the same problem, one day it works fine. Now sinds Friday my ultra 2 does not measure heartbeat for hours and hours and hours. I went to bed last night and woke up, slept 1.5 hour…. Looked what my heartbeat measurement where…. Yeahhhh sinds 23.15 until 06.17 NO heartbeat monitors…. And that happens all the time.


so when you sleep and the garbage watch does not measure heartbeat it can’t tell what sleep your in.


sad story is I have 4 cases at Apple Netherlands and they don’t do anything….


I have so many problems with the Ultra after watchos11 updates….

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Why is my Apple Watch Ultra 2 showing incorrect sleep data?

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