I’m using an Apple M4 iMac on macOS Tahoe 26.6 Beta and an iPhone 16 Pro Max on iOS 26.5.
After updating, my iPhone 16 Pro Max no longer appears under iPhone Mirroring settings, and both iPhone Mirroring and AirDrop stopped working from my primary macOS account.
The strange part: Apple Support had me create a new macOS user account, and everything worked immediately there. The iPhone appeared correctly, Mirroring worked, and AirDrop worked.
When I switch back to my primary account, the iPhone disappears again and neither feature works.
My primary account still works normally with my iPad Air M3 and iPhone 12 Pro, so the issue seems specific to the iPhone 16 Pro Max and my original macOS profile.
Has anyone else seen this issue or found a fix?