How do you view REM sleep on the iPhone? I'm on V9.1 on my watch but under "stages" on the health app on the phone, nothing under REM, Deep or Core shows.
How do you view REM sleep on the iPhone? I'm on V9.1 on my watch but under "stages" on the health app on the phone, nothing under REM, Deep or Core shows.
Apple Watch Series 7, watchOS 9