Apple Watch SE 3

Apple Watch SE 3

watchOS 26

My Apple Watch SE 3 watchOS 26 doesn't register my activity

Cause 1 of 3: Your Apple Watch is too loose on your wrist

If your Apple Watch is too loose on your wrist, some of the watch sensors will not function correctly.

Solution: Adjust the watch strap so that your Apple Watch is neither too loose nor too tight on your wrist.

Apple Watch SE 3

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