Every official Apple Developer session on the foldable — embedded and ready to watch, no downloads, straight from Apple's channel.
iPhone Duo is Apple’s first foldable iPhone, unveiled September 9, 2026 and shipping October 23. This developer hub indexes every official Apple Developer session on the device — preparing your app, designing for the fold, adaptive layouts, multiple displays, camera and vertical bars — with session videos you can watch inline and written notes to read. Plus the full specification, launch prices across 20 countries, best apps for the foldable and free wallpapers.