Your iPhone App on the iPhone Duo: What Breaks, What to Fix, and What It Costs
Published: 16 September 2026 | Updated: 16 September 2026 Short answer: To prepare your app for iPhone Duo, rebuild it with the iOS 27.1 SDK before the phone goes on sale on October 23. Apps built with older SDKs keep working, but they sit boxed in black space on both screens. Bottom line: Fix orientation-based […]
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