UNITED STATES — The iPhone Duo is Apple’s first foldable iPhone—a book-style device announced at the September 2026 Apple event alongside the iPhone 18 Pro lineup.
According to Apple’s public timeline covered by major tech outlets, preorders were set to open in mid-October with customer availability around October 23, 2026 in the first wave of countries, expanding shortly after.
What makes it different
Unlike the slab-style iPhone 18 Pro, the Duo folds open for a larger inner display aimed at multitasking, video, and productivity. Reporting around the launch described dual rear 48-megapixel cameras (without a dedicated telephoto on the first Duo), A20 Pro-class silicon, and a design Apple executives said finally met internal bars for durability and software integration.
iPhone Duo Camera: What It Can and Can’t Do — built around Apple’s new foldable design
— Techticia (@TechTicia) September 17, 2026
Price and expectation
Launch coverage put U.S. starting prices near the premium foldable tier (reports cited roughly $1,999-class entry configurations). Treat final cart prices as store- and config-dependent. If you only need a conventional phone, the 18 Pro remains the simpler buy; the Duo is the form-factor experiment.







