A foldable phone asks you to think about two screens. The small one handles quick tasks in your hand, while the larger one gives apps space when you open it.
Apple’s iPhone Duo folds into a compact shape with a 5.4-inch outer display. Opened, its larger inner display offers more room for apps and media.
Apple announced October 16 pre-orders in its first wave of markets, with availability beginning October 23 in those markets.