Jan-E, Where are you looking? If I type in 16.5 manually, no drop down entry, it can compile and build to phone but I get messages: The minimum deployment target is set to 16.5 but the platform only knows how to compile for iOS 16.4
and The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 16.5 but the range of supported deployment versions is 11.0 to 16.4.99