A hidden interface in Apple's upcoming foldable shows documents as two-page spreads when it's unfolded.
Code explorer pdfu found the feature buried in iPhone Duo's Quick Look app and posted a clip on X. Opened in the book position, Quick Look displays consecutive pages of a document side by side, like a magazine spread, with search, markup, and share controls tucked along the right edge. The find comes from poking at software, not an Apple announcement, so the layout could still change before the device ships. It appears to be one of several angle-aware interface tweaks in early builds, alongside side-by-side multitasking.
Apple's foldable strategy lives or dies on software that actually uses the hinge, not just the same iPhone interface stretched across two screens. A two-page Quick Look view is a small but telling signal that Apple is designing for the device spending real time open like a book, not just unfolded for extra screen space. That is a different bet than existing foldables, which mostly scale up a single-screen app layout rather than splitting content across the fold.
It is a modest feature to hang a strategy on, and Quick Look previews are an easy first example, not a hard test of whether third-party apps follow suit.