Black square obscures most of Apple Watch series 8 face
I can only see the top eighth of my Apple Watch Screen so cannot do anything much. Any advice?
Question marked as
First force restart the Watch
i.e. press and hold both the side button and Digital Crown for at least 10 seconds, then release both buttons when you see the Apple logo.
Then, although it may seem irrelevant, while the Watch is restarting, Force Restart the paired iphone Force restart iPhone – Apple Support (UK)
If it is still inaccessible then Contact Support under warranty.
Click here > Contact - Official Apple Support
or phone numbers
Click here > Contact Apple for support and service - Apple Support