Blog

Framework-by-framework guides to iPhone Duo. Posts marked analysis cover frameworks whose vendors have shipped no iPhone Duo support — those conclusions are ours, and the posts say so.

• Capacitor, Cordova and web views on iPhone Duo

  Hybrid iOS apps adapt best to the foldable iPhone, because CSS was built for variable viewports. An analysis of the few things that still break.

  2026-09-09Analysiscapacitor · cordova · ionic · webview

• Flutter on iPhone Duo: the right abstraction, possibly unwired

  Flutter already has a foldable API from Android — MediaQuery.displayFeatures. An analysis of whether it reaches iPhone Duo, and what to do either way.

  2026-09-09Analysisflutter · foldable · iphone-duo · mediaquery

• React Native on iPhone Duo: what breaks and what works

  Meta has shipped no iPhone Duo support. Which React Native patterns break on the foldable display, which survive, and where a native module becomes unavoidable.

  2026-09-09Analysisreact-native · foldable · iphone-duo · safe-area

• SwiftUI on iPhone Duo: adaptive layout and transitions

  A walkthrough of the SwiftUI APIs for iPhone Duo — ArrangementView, ReservedRegion, size classes and vertical toolbars — in the order that actually works.

  2026-09-09Apple-documentedswiftui · ios-27 · adaptive-layout · foldable

• UIKit on iPhone Duo: vertical bars and arrangements

  What changes in a UIKit app on iPhone Duo: the vertical bar region, UIArrangementViewController, reserved regions, and the UIScreen.main deprecation.

  2026-09-09Apple-documenteduikit · ios-27 · adaptive-layout · foldable

• Unity games on iPhone Duo: resolution changes mid-play

  Games have a harder iPhone Duo problem than apps, because resolution is usually treated as a launch-time constant. An analysis of what changes in a Unity iOS build.

  2026-09-09Analysisunity · games · foldable · iphone-duo