iPhone Duo supports Apple Pencil and comes with iOS redesigned for multitasking on different screen sizes/orientations, with auto-adjusting controls and apps (Terrence O'Brien/The Verge)

Apple introduced the iPhone Duo, a foldable phone with a 5.4-inch outer display and a 7.6-inch inner screen powered by an A20 Pro chip and a new display engine, retaining Touch ID. It supports the Apple Pencil and runs iOS optimized for multitasking across screen sizes. Prices start at $1,999 for 256 GB, with a 2 TB version at $3,199; pre-orders open October 16 and sales begin October 23.