Apple announced its first foldable iPhone, the iPhone Duo, on September 9, 2026, confirming a book-style design with a 5.4-inch outer display and roughly 7.6-inch inner screen, A20 Pro chip, Touch ID, and advanced hinge. Priced from $1,999, it enters preorders October 16 and reaches customers October 23 alongside iPhone 18 Pro models. This late but premium entry follows years of development and rivals like Samsung’s Galaxy Z Fold series and Huawei devices, with Apple emphasizing durability, thinness when open, and iPad-like multitasking. A second-generation model is already in testing for 2027. Traders should watch the October shipping window and any last-minute production or supply updates that could affect resolution criteria for 2026 release markets.