Taimur Asad·

Apple’s iOS 26 SDK Just Hinted At A Future Foldable iPhone

There have been ongoing rumors that Apple is working on its first foldable phone, and a new report suggests its own iOS 26 SDK might have hinted at such a launch.

9to5Mac reports that a WWDC session for the new SDK confirmed that apps will no longer be letterboxed or scaled on new screen sizes when used on future hardware.

Historically, when Apple introduced a taller iPhone, a new iPad aspect ratio, or any other form factor shift, apps built with older SDKs would default to running in a scaled or letterboxed mode. Developers would only get true native rendering once they updated their app against the latest SDK and resubmitted it to the App Store.

However, with iOS 26, Apple is changing how the software will deal with different displays. According to the session:

There is another compatibility mode, specifically for new hardware. Previously, when new hardware was released with a different screen size, the system would scale or letterbox your app’s UI. That scaling would stay in place until you built with a newer SDK and resubmitted your app. Once you build and submit with the iOS 26 SDK, the system will no longer scale or letterbox your app’s UI for a new screen size. These are the best practices to ensure that your app is flexible.

iOS 26

Historically, these kinds of display changes have been made when Apple has plans to launch a new aspect ratio for its devices. With that in mind, this could suggest that Apple has plans for a new foldable iPhone with an aspect ratio that is not currently part of the iPhone lineup. Modern iPhones have a 19.5:9 ratio, but a foldable iPhone is expected to have a 14.1:10 inner screen and a 14.6:10 outer screen, according to previous leaks.

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