Hello!
My sleep process isn't recorded with iPhone only (without wearable device) on iOS 18. On previous iOS versions it was recorded but now it doesn't work.
I compare iOS 17 and iOS 18 Beta and I see the difference that in Full Schedule was deleted tumbler "Track Time in Bed with iPhone" that helped to track sleep process without wearable device (I found it here: Health app -> Browse -> Sleep -> Your schedule block and tap on "Full Schedule & Options" -> Scroll to the bottom).
I didn't find any information from Apple about this changes in change log.
And one more time: I don't use Apple Watch or any wearable device.
Do you have any information about sleep tracking with iPhone only? Can I track sleep process only with iPhone?