Apple has started rolling out a fix for one of the most common complaints about its foldable iPhone Duo: the device's wide outer display makes one-handed typing and tapping awkward. The first developer beta of iOS 27.3, released today, brings a horizontal version of Reachability built specifically for the Duo's unusual screen proportions.
How the new Reachability works
On a standard iPhone, Reachability pulls the entire interface downward with a swipe along the bottom edge, letting users tap elements near the top of a tall screen without stretching their thumb. Because iPhone Duo's outer display is wider rather than taller, Apple adapted the mechanic to move horizontally instead. A short swipe to the side of the screen shifts the whole interface left or right, bringing distant icons and buttons within thumb's reach. The feature lives in Settings, under Accessibility, where users can turn it on manually.
Why Apple built it
When reviewers first tested iPhone Duo last month, several noted that the extra-wide outer panel, while useful for multitasking and widescreen content, created real friction during single-handed use, the kind of everyday scenario where a phone is held in one hand while the other is occupied. Apple acknowledged the issue at launch and promised a software update would address it. iOS 27.3 beta 1 delivers on that promise, giving Duo owners an accessibility tool that effectively doubles as a usability fix for the hardware's design trade-off.
Availability and what comes next
iOS 27.3 is currently limited to Apple's developer beta program, with a public beta expected within days for users enrolled in that track. Apple has indicated the finished version will ship broadly next month, with mid-December cited as the most likely release window. Users who are wary of beta software, including occasional bugs or battery and performance quirks common to early builds, may prefer to wait for the stable release rather than installing the beta now.