iFixit tears down the iPhone Duo as screens crack during setup on Apple's first foldable

Apple's first folding phone, the iPhone Duo, has barely reached customers and some of its screens are already giving out. According to iFixit, whose teardown of the device has been circulating on Hacker News's front page, owners are reporting cracks and glowing lines at the fold, in some cases appearing while the phone was still being set up. Apple is currently offering replacement units, but iFixit notes that out-of-warranty damage to the inner display will run $999, roughly half the cost of a whole new device.

The most repairable foldable, with one big exception

Despite the early failures, iFixit's verdict on serviceability is unusually positive: the company calls the Duo the most repairable foldable it has ever taken apart. Apple carried over several repair-friendly techniques from its conventional iPhones, including batteries that detach when an electrical current is applied, an outer screen that comes off easily, and a layout that leaves many components reachable without a deep teardown. The exception is the inner display, which iFixit expects to be genuinely painful work. It estimates that an equivalent screen repair on Google's Pixel 10 Pro Fold takes a typical DIYer three to five hours; the Duo should be quicker because the display can be disconnected without opening the far side of the device, but even with the specialized fixtures in Apple's manual, redoing all the adhesive is painstaking. iFixit plans to sell replacement screens itself, but cautions that the part is complicated and will not be inexpensive.

A crease in disguise

The Duo's inner display looks remarkably flat when open, and iFixit found that much of that smoothness comes from optics rather than mechanics. A matte nano-texture finish scatters reflections across the surface; under an Evident DSX2000 microscope it appears as tightly packed rounded bumps, which the teardown compares to bubble wrap. That diffusion softens the dip at the fold. Remove the layer and iFixit judges the Duo's crease to be arguably more visible than the one on Samsung's Galaxy Z Fold8, and the bare surface underneath scratches more easily.

Apple has offered nano-texture on rigid screens before, including the iPad Pro, MacBook Pro and Pro Display XDR, but on the Duo it sits on a flexible polymer cover that can be replaced while keeping the OLED beneath it. That is a meaningful contrast with the original Galaxy Fold, which reviewers famously killed by peeling off what looked like a screen protector. Apple even publishes a cover-layer replacement procedure, though it requires specialized fixtures and precise alignment rather than a simple film swap. The service costs $49 without AppleCare, or $19 with it.

Oval pixels by design

Zooming below the surface treatment, iFixit spotted an oddity in the subpixels: many of the red, green and blue elements are oval, with their long axes pointing in different directions. Oval subpixels are not new, and DisplayMate photographed them on Samsung's Galaxy S4 back in 2013, but Samsung arranged them in a regular pattern while the Duo's are irregular and hard to read even under magnification.

iFixit found its explanation in Apple's patent filings. One application on reducing diffraction artifacts describes varying subpixel shapes and orientations, with the display divided into regions that each carry their own pattern, so a single subpixel may sit in one of at least 32 unique displacements. A 2025 Apple patent on mitigating diffraction artifacts in polarizer-free displays suggests the arrangement is deliberate. iFixit reads the scheme as a form of geometric dithering, breaking up repeating patterns so their optical artifacts do not reinforce one another and draw the eye toward the fold.

A hinge built like a watchband

Like nearly every modern foldable, the Duo bends its display through a waterdrop-shaped cavity, an approach iFixit traces to the Motorola Razr it tore down in 2020; even fully closed, the screen rests in a gentle curve inside the hinge. Apple's own hinge patent describes a chain of linked metal joints that each rotate through a limited range, an arrangement iFixit compares to a metal watchband. Curved guides make those joints move as though their pivot points sat inside the screen above them, reducing how much the display is stretched and compressed. Springs offset part of the bending force and let the hinge hold its position, while synchronization gears keep the joint chain moving in step. Google chose differently on the Pixel 10 Pro Fold, substituting linked spring-loaded cams to save space and avoid failures from damaged gear teeth; iFixit's counterpoint is that gears are predictable.

Why it matters

Screens that crack during initial setup are exactly the kind of first-generation hardware signal that early adopters and repair shops watch for, and they arrive before any long-term wear data exists. The immediate stakes are financial: outside whatever replacement window Apple extends, a damaged inner display costs $999 to fix, about half the price of the phone itself, which makes AppleCare or equivalent coverage close to essential for Duo buyers. For the broader market, the teardown sends a mixed but notable signal. Apple has built a foldable that is genuinely easier to service, with replaceable cover layers, electrically released batteries and accessible internals, which could pressure rivals toward similar designs. At the same time, the day-one screen failures show that the fundamental fragility of folding OLED panels remains unsolved, no matter how well the crease is disguised.