Use a static variable

If you just want to do simple processing depending on different iPhone models, recommend the following static variable:

static var isFullScreen: Bool {
    if #available(iOS 11, *) {
        guard let w = UIApplication.shared.delegate?.window, let unwrapedWindow = w else {
            return false
        }
            
        if unwrapedWindow.safeAreaInsets.left > 0 || unwrapedWindow.safeAreaInsets.bottom > 0 {
            //print(unwrapedWindow.safeAreaInsets)
            return true
        }
    }
    return false
}

Install ScreenType by Cocoapods

ScreenType is a library to easily distinguish between iPhone models in Objective-C and Swift. And you could install it by Cocoapods.

Go to GitHub – allgamesallfree/ScreenType: Easily distinguish between iph models in Objective-C and Swift or Easily distinguish between iph models – maxste.in in order to find further explanations.