Someone was going to find it eventually. Two software engineers — M1Astra and Sam Henri Gold — dug through the iOS 27 beta framework code and pulled out strings that point pretty directly at a foldable iPhone. Apple didn’t label anything “iPhone Ultra,” naturally, but the code doesn’t need to say the name outright.
The strings they found: foldState, angleDegrees, mechanicalAngleDegrees, and isAngleValid. That last one’s almost comically on the nose. FoldState is the system detecting whether the device is open or closed. The angle strings go further — they suggest iOS 27 can read how far the phone is open, not just whether it is.
That’s significant because it opens the door to something Apple hasn’t done before. Android has had Flex Mode for a few years now, where you partially close a foldable and the screen splits into two functional halves — video on top, controls below, that sort of thing. If iOS 27 is tracking hinge angles this precisely, a similar mode on iPhone Ultra would make sense. Watch a video hands-free, type on a wider keyboard while keeping your content visible. The mechanics are all there in the code.
M1Astra, who also reports for Bloomberg, pointed out something else worth paying attention to. Several features already confirmed for iOS 27 read differently once you factor in a foldable screen. Full-screen widgets are coming — they fill the entire display, but on a device with a crease down the middle, “entire display” means one panel. That’s actually a cleaner implementation than cramming a widget across a continuous screen. iPhone Mirroring is getting an update too, now casting in an iPad-sized window rather than a shrunken iPhone frame. Coincidence? Possibly. But Apple doesn’t usually build iPad-scale UI elements into an iPhone OS update without a reason.
At this point, the rumor picture is fairly coherent. Code references to fold detection, angle tracking, and display features that make more sense on a larger split screen — all sitting inside the first iOS 27 beta. A fall announcement alongside the iPhone 18 series tracks with how Apple has handled major hardware launches historically. September is the working assumption.
