Apple watch ultra screen mirroring to iPhone up to date software. It consistently disconnects after short periods of successful connection apps running or not. I have hard reset devices with same result.
iPhone 13 mini, iOS 18
The first (and simplest) thing to try if something isn’t working right is to restart your Apple Watch and its paired iPhone. If necessary (device not responding), try a forced restart. Both methods can be found here:
How to restart your Apple Watch - Apple Support
Restart your iPhone - Apple Support
If that doesn't help, the next steps would be to unpair and pair your watch again and restore from the backup just created. This should result in no loss of data. It deletes all temp and corrupted files and re-indexes the file system.
Unpair and erase your Apple Watch - Apple Support
Set up your Apple Watch - Apple Support
As a last resort, follow the above procedure for unpairing and pairing the watch, but do not restore the backup. Set the watch up as new instead. There should be no loss of Fitness data or Awards since those are stored on the paired iPhone, not the watch.
If you still need help, contact Apple Support.
Apple watch mirroring ios 18 to iphone connects, then disconnects
