How come macOS High Sierra is not available on iPhone ten x Max?
On a MacBook pro macIOS High Sierra is downloadable. I need my iPhone 10 x Max to do the same.
iPhone XS Max, iOS 17
macOS is for computers. It does not run on iPhones.
iPhones run iOS. The iPhone Xs Max can update to the current iOS 17.4
Why do you think you need macOS High Sierra on your iPhone exactly?