Apple has officially unveiled the highly anticipated foldable iPhone, and it’s called iPhone Duo. Here’s everything you need to know. iPhone Duo 7.6-inch Super Retina XDR inner display, 5.4-inch outer display. Custom nano-texture finish that minimizes crease visibility and reduces glare. Apple-designed coating for scratch resistance. The FaceTime camera is hidden under the inner display. Apple Pencil support coming later this year. Touch ID is integrated into the side button for biometric authen...