Why is my Apple Watch Ultra 2 showing inaccurate readings?

My new Apple Watch Ultra 2 now shows that I have stood up 13 times since midnight. It is currently 1:38 PM, which can only happen if I sleepwalk, and I do not do that. What could be wrong with the watch?


[Re-Titled by Moderator]



Posted on Sep 25, 2024 4:40 AM

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Posted on Sep 25, 2024 6:08 AM

I'm guessing, but the Watch determines standing via the gyroscope and accelerometer. If you move about while you're sleeping, it may detect and interpret that movement as standing. These sorts of measurements are always going to be a bit of guesswork by the algorhythms, so they will not always be accurate. I regularly get activity notices from my Watch when I've just been sitting; apparently it detects my arm movements while I'm typing.


If you see other significant inaccuracies while you're awake, then there may be a fault with the sensors. Try restarting your Watch and see if that improves things. If not, you may wish to take the Watch to an Apple Store or authorized service center and see if they can check it.


Regards.

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Question marked as Top-ranking reply

Sep 25, 2024 6:08 AM in response to Bruhn

I'm guessing, but the Watch determines standing via the gyroscope and accelerometer. If you move about while you're sleeping, it may detect and interpret that movement as standing. These sorts of measurements are always going to be a bit of guesswork by the algorhythms, so they will not always be accurate. I regularly get activity notices from my Watch when I've just been sitting; apparently it detects my arm movements while I'm typing.


If you see other significant inaccuracies while you're awake, then there may be a fault with the sensors. Try restarting your Watch and see if that improves things. If not, you may wish to take the Watch to an Apple Store or authorized service center and see if they can check it.


Regards.

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Why is my Apple Watch Ultra 2 showing inaccurate readings?

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