The iPhone Duo’s first day on sale has brought an unwelcome stress test. Before most buyers had spent much time with Apple’s foldable, reports of damaged inner displays had begun circulating — with users describing cracks and bright lines emerging along the hinge.¹

One Australian owner said the phone had been used for roughly six hours and opened fewer than 20 times when it failed. “As I continued opening it, I heard an audible crack, and the screen broke right along the hinge,” the user wrote, adding that there were no visible marks on either the display surface or outside hinge. The Apple Store reportedly swapped the handset for a new one on the spot. Other posts showed apparently similar breakage, concentrated in the same area. Apple did not immediately respond to a request for comment.¹

That early pattern has since shifted scrutiny from the screen itself to the complex mechanism beneath it. YouTuber CuriousHagi reproduced the failure in durability testing, then dismantled the device. The teardown found a gear-like central hinge and multiple internal linking pieces — including one thinner link that snapped at a small notch, its most vulnerable point.²

The examiner also found marks where the hinge meets the support plate, suggesting the component may catch as the phone opens. That does not establish a definitive manufacturing flaw, and the available reports remain anecdotal. But the convergence is hard to ignore: early users describe the same sudden hinge-area fracture, while the teardown identifies a part built around an apparent weak point.²

For Apple, the immediate question is whether these are isolated launch-day defects or the first sign that its most intricate new hardware design has a durability problem.