Apple Watch Series 4 white screen
My Apple Watch Series 4 had a white screen. It comes back to normal and goes back again. What can I do?
Apple Watch Series 4, watchOS 9
It is probably a hardware fail that needs Apple's help but first...
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, Force Restart the paired iphone Force restart iPhone – Apple Support (UK)
Observe the behaviour. If it is still misbehaving...
Unpair and erase your Apple Watch
and then
If no better you may want to unpair then set up without restoring the backup.
You may also want to make sure the software on the watch and iphone are up to date.
Update your Apple Watch - Apple Support
Update your iPhone or iPad - Apple Support
If you've completed that troubleshooting and the issue is still not resolved, Contact Support.
Click here > Contact - Official Apple Support
or phone numbers
Click here > Contact Apple for support and service - Apple Support