Overview
- The iPhone Duo went on sale Friday and launched with limited inventory as Apple warned of low foldable‑panel and hinge yields that will keep assembly output constrained for months.
- Apple shipped Duo units running an exclusive iOS 27.1 build that is tailored to the foldable’s screen and features and will be superseded for all iPhones by iOS 27.2 next week.
- The App Store will label titles 'Made for iPhone Duo' and Apple requires developers to build with the iOS 27.1 SDK or later for full Duo optimization so apps can fill the 7.6‑inch inner display.
- Security team Calif demonstrated a proof‑of‑concept jailbreak on a Duo running iOS 27.1 on launch day but has not released a public tool and researchers say many exploited bugs are slated to be fixed in iOS 27.2.
- The Duo’s high price and tight supply are producing quick local sellouts and long waits for preorders, retailers were told to discourage walk‑ins, and Apple’s strategy frames the device as a premium, limited‑volume halo product rather than a mass‑market model.