Guides
Everything the fold changes.
Short, sourced explainers — no hype, just what you need to know.
Explainer
Why some apps have black bars on iPhone Duo
The three ways iPhone Duo displays an app on its inner screen, why it depends on the SDK, and what you can do about it.
ReadHow to
How Split View works on iPhone Duo
Two apps side by side on an iPhone for the first time. What works, what doesn’t, and which apps make the best pairs.
ReadBefore you buy
Will your apps work on iPhone Duo? A pre-order checklist
Before you spend $1,999, check the apps you rely on. A five-minute checklist, and what to expect at launch.
ReadRoundup
The best apps for iPhone Duo
Apps that are confirmed to use iPhone Duo’s inner display well — updated as new evidence arrives.
ReadGames
Gaming on iPhone Duo: what to expect
The first games shown on iPhone Duo, how unoptimized games will look, and which titles are best placed to adapt.
ReadFeature
StandBy on iPhone Duo, explained
iPhone Duo can show StandBy on either display, even when it isn’t charging. Here’s how it works and what’s new.
ReadDevelopers
Preparing your app for iPhone Duo: the short version
The SDK tiers, the new APIs, and a practical order of work for getting your app off the black bars before launch.
Read