Hinge, multitasking and scenes Three capabilities that are unique to iPhone Duo, in rising order of ambition: reacting to the hinge, participating in Split View, and putting your own UI on both displays at once. The hinge The system itself responds to the hinge — the wallpaper reacts to the angle with a zoom effect as the device opens. Apps can read the same signal. Use the modifier in SwiftUI, or in UIKit. Both give you: - a coarse status — closed, partially open, fully open - a continuous angle , updated live hands your closure the previous and current hinge context. hands its handler the i…