Too Long; Didn't Read
Designing for iPhone X Screen Dimensions: 9 Tips for a Great UX. iPhone X screen became 20% taller compared to iPhone 8/8 Plus that is equal to 145pt of additional space. Don’t hide the iPhone X notch in screen since we already mentioned it. Apple says the space at the sides of sensor housing gives some valuable space for content and status bar, so by hiding it you will make your app feel smaller. Don't worry about your background elements like maps, colors, and others. They’ll be gently clipped by smartphone’s rounded corners.