Display Zoom causes sizeInches to be nil (with iPhone 12 mini)

[kevinrenskers]

When running on an iPhone 12 mini

UIDevice.current.dc.screenSize.height = 812
UIDevice.current.dc.screenSize.scale = 3
UIDevice.current.dc.screenSize.sizeInches = 5.8

But with Display Zoom turned on I get these values:

UIDevice.current.dc.screenSize.height = 693
UIDevice.current.dc.screenSize.scale = 3

And since there is no match, sizeInches is nil.

[kevinrenskers]

You're going to have the same problem on more devices, see also https://hacknicity.medium.com/how-ios-apps-adapt-to-the-various-iphone-12-screen-sizes-e45c021e1b8b.