Apple’s long-awaited foldable, the iPhone Duo, has just crossed its first week in consumer hands—and while many users are thrilled by its design and innovation, a troubling issue is sneaking into early impressions.
Cracks at the hinge emerge early
Shortly after launch, reports surfaced of the iPhone Duo’s inner foldable display developing cracks along its central hinge. In several cases, users heard a crunching sound or noticed stiffness when unfolding—often followed by a jagged crack and a bright line of dead or white pixels extending from the hinge edge. Surprisingly, some of these incidents occurred within mere hours of use, with fewer than 20 folds in certain units. In one case, a customer in Australia said the damage showed up after six hours of ownership.
Apple responds, investigation underway
The company has acknowledged the issue, calling it “limited to a small number of units,” and urged affected customers to contact AppleCare for replacements. Apple claims most users won’t encounter the problem and that affected phones show signs of damage shortly after unboxing—not after extended use. Some users report receiving in-store replacements, though others (especially those buying through carriers) are facing delays due to limited spare-unit stock.
User experience & other early impressions
Despite the defect reports, many early users—including reviewers—are still impressed by the Duo’s day-to-day performance. The outer display proves handy for notifications, messaging, and quick tasks; unfolding into portrait mode allows multitasking or video watching to feel more immersive. Touch ID and Apple Watch unlock work reliably, though those longing for optical zoom will still miss having a dedicated telephoto lens.
Battery life is said to fall between that of the iPhone 18 Pro and Pro Max, with common usability yielding a full day. App compatibility isn’t perfect yet, but there’s momentum: developers are steadily updating software to suit the Duo’s dual-display form. For Safari users, the “Wider” extension—previously mentioned in early previews—adjusts the outer screen layout more fully, smoothing out the visual experience.
Tech breakdown: what might be going wrong
Teardowns and analysis suggest the hinge mechanism is at the heart of the problem. Multiple reports point to stress zones where a flex cable crosses the hinge support—areas with overlapping edges and components that may be under strain when the device is closed or opened. One theory from iFixit and others is that a center support bar that’s designed to retract may not be sinking far enough, allowing the inner display to press against it.
There’s also concern about dust intrusion and whether users closing the phone by pressing on the center hinge area might exacerbate the issue. Some reports include visible gaps between the back shell and hinge assembly when the device is closed, which may impinge on the device’s IP68 claims. No official guidance yet, beyond standard care instructions.
The iPhone Duo aims to push Apple’s foldable ambitions forward—but the emerging hinge defect risks undermining confidence in what’s otherwise a strong debut. With warranty coverage in place, users can seek replacements, but the fact that damage appears so early may suggest issues in a specific batch, or need for tighter quality control. Moving forward, it’s vital to track how widespread the issue becomes, how Apple responds structurally (not just publicly), and whether software updates or design tweaks can limit risk. If not, this could turn from a minor blemish into a consumer trust problem. Pay attention to return policies, early replacement availability, and whether the next version shows real improvement.
