The display has rounded corners that follow a beautiful curved design, and these corners are within a standard rectangle. When measured as a standard rectangular shape, the screen is 5.85 inches (iPhone 11 Pro), 6.46 inches (iPhone 11 Pro Max), or 6.06 inches (iPhone 11, iPhone XR) diagonally. Actual viewable area is less.. I just recieved my new Iphone 5 yesterday, and I experienced this same problem. After trying a restart and a restore, the issue wasn't resolved. I just got off the phone with an Apple support representative who said that is a hardware issue, and I will have to drop the phone off at the UPS store to be shipped back to Apple..