iPhone Duo's interface is iPad-like, with some extra tricks

Apple’s iPhone Duo features a 7.6-inch inner display that supports Split View, allowing apps to be resized and run side-by-side. Unfolding reveals two home-screen-worth of space, with sidebars, docks, and menus rearranged for one-hand reach. Apple apps gain new features: live camera feeds during FaceTime, a front-screen view while photographing, and an updated StandBy ambient display. When USB-C Apple Pencil support arrives, iPad-exclusive drawing, markup, and note-taking functions will be available on the Duo.