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denisch

macrumors newbie
Original poster
Nov 30, 2021
22
18
I recently bought Apple Watch Series 11. They’re set up and working fine, but for two nights in a row I’ve had the same issue: the alarm from Sleep Focus goes off on my iPhone instead of on the watch.

When I look at the watch in the morning, it’s asking for the passcode. From what I understand, that means wrist detection was disabled at some point, so the alarm was handed off to the iPhone instead.

I don’t have tattoos on my wrist, the band is snug, and I sleep without long sleeves. What could cause wrist detection to fail during sleep, resulting in the alarm triggering on the phone instead of the watch?

Sleep tracking itself looks accurate right up until the minute I wake up. Notifications also seem to have been delivered to the watch overnight — at least at a glance, I didn’t notice any obvious differences between the watch and phone notification history.

One theory I have is that this might be related to the watch being brand new. Similar to how a new iPhone may ask for the passcode more frequently during the first few days, maybe the watch does the same. But this theory doesn’t fully hold up, because during the day I don’t see any of these “lockouts,” and I also don’t see the “Apple Watch Unlocked by iPhone” message on the iPhone — which normally appears when the watch is unlocked via Face ID.

Any ideas on what could be causing this?

P.S. And an important addition: despite being locked, the watch still monitors my heart rate and records my sleep throughout the night until I wake up (today, for example, it was 99 points out of 100).
 
I'd try it on the other wrist.

And not to ask a dumb question, but to ask a dumb question, you're wearing the watch with the face on the top (outside) of the wrist? You're not wearing it on the underneath (inside)?
 
P.S. And an important addition: despite being locked, the watch still monitors my heart rate and records my sleep throughout the night until I wake up (today, for example, it was 99 points out of 100).
I've been having this occasionally.

But it records these things even when locked - you just can't display them on the watch until you unlock it.
 
I'd try it on the other wrist.

And not to ask a dumb question, but to ask a dumb question, you're wearing the watch with the face on the top (outside) of the wrist? You're not wearing it on the underneath (inside)?
Yes, of course, with the display facing up, as expected.
I'll try it on my right hand today...
 
But it records these things even when locked - you just can't display them on the watch until you unlock it.
What is especially strange. And if everything works, why doesn’t my iPhone receive a notification with a sleep rating like all my friends? I have this feature enabled
 
I recently bought Apple Watch Series 11. They’re set up and working fine, but for two nights in a row I’ve had the same issue: the alarm from Sleep Focus goes off on my iPhone instead of on the watch.

When I look at the watch in the morning, it’s asking for the passcode. From what I understand, that means wrist detection was disabled at some point, so the alarm was handed off to the iPhone instead.

I don’t have tattoos on my wrist, the band is snug, and I sleep without long sleeves. What could cause wrist detection to fail during sleep, resulting in the alarm triggering on the phone instead of the watch?

Sleep tracking itself looks accurate right up until the minute I wake up. Notifications also seem to have been delivered to the watch overnight — at least at a glance, I didn’t notice any obvious differences between the watch and phone notification history.

One theory I have is that this might be related to the watch being brand new. Similar to how a new iPhone may ask for the passcode more frequently during the first few days, maybe the watch does the same. But this theory doesn’t fully hold up, because during the day I don’t see any of these “lockouts,” and I also don’t see the “Apple Watch Unlocked by iPhone” message on the iPhone — which normally appears when the watch is unlocked via Face ID.

Any ideas on what could be causing this?

P.S. And an important addition: despite being locked, the watch still monitors my heart rate and records my sleep throughout the night until I wake up (today, for example, it was 99 points out of 100).
usually the watch locking itself while wearing is caused by the band too loose, and you say this doesn't happen during the day, so:
are you wearing the same band for sleeping as during the day? do you adjust the band for the night?

I can actually slide my index finger all the way thru under the band, I get the watch locked due to loss of contact maybe once or twice in a year, if that.
if it is not too uncomfortable, tighten the band a little and give that a try.
What band do you use?
 
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