Here's how iPhone Duo treats apps not optimized for the foldable display
Key Points:
- Apple has announced the iPhone Duo, its first foldable display device, along with details on how third-party apps will function on its larger screen.
- The company introduced three app compatibility modes across iOS 26, iOS 27.0, and iOS 27.1 to optimize app performance on the foldable display.
- iOS 27.1, launching alongside the iPhone Duo in October, offers full app support, allowing apps to fully utilize the foldable display’s capabilities.
- Apps not yet updated to iOS 27.0 will run in a default compatibility mode with limited screen use, while iOS 27 apps improve display utilization but still leave some unused space.
- Apple has provided a developer-focused tech talk video explaining the new system, encouraging developers to update their apps for the best iPhone Duo experience.