The race to build great iPhone Duo apps is about to begin
When iPhone Duo arrives next month, many third-party apps might not work as well as Apple’s built-in apps. There’s a reason for that, at least initially, though the situation should improve over time. more…
When iPhone Duo arrives next month, third-party apps may not function as well as Apple's built-in apps. There are three levels of compatibility. Apps built for iOS 26 and earlier run in a mode that doesn't utilize the larger display. When iPhone Duo launches on October 23, developers will need to create new versions of their apps using Xcode and the iOS 27.1 beta before testing.
However, most developers won't have a real iPhone Duo until launch day. Developers should prioritize software updates for Duo customers as they are more likely to spend money on the App Store.
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