Six weeks before the first iPhone Duo cracked, Apple's chief executive told a launch audience that rival foldables looked like "two awkwardly glued-together phones," and that Apple had reinvented the category.
The Duo went on sale October 23 at $2,000 for 256GB, up to roughly $3,000 for 2TB. It sold out in minutes. Within days, buyers were posting photos of a bright line and cracks along the inner display at the central hinge, sometimes after an audible snap when the phone was folded.
What Apple said
On Monday the company acknowledged it: "We are aware of an issue impacting the inner display on a small number of iPhone Duo units." Affected buyers should contact AppleCare for a replacement. Apple did not comment on the cause.
What we know
Some units fail at the fold. iFixit built a 3D model of the hinge from teardown footage, CT scans, and Apple patents, and found the reported damage clusters just below where a display cable runs under the screen, near a central support bar. Its hypotheses: the bar may not be dropping out of the display's way as the phone closes, or a curved guide rail may rise too high during folding. Either would create what iFixit calls "a small stress hotspot near the reported break location." iFixit could not confirm a direct cause.
It also found the Duo the most repairable foldable it has scored: 5 out of 10, with clip-based bezels and batteries on releasable adhesive.
What we don't know
The failure rate. Whether the failures cluster in an early production batch. Whether the cause is a design margin problem, a manufacturing defect, or misuse — TechRadar has reasonably cautioned that all three are on the table. And whether a replacement unit is meaningfully different from the one that broke.
What I would ask
Three questions, none of which require a press conference.
Does the hinge meet its rated fold count, and what is that number? Is there a running design change, and which production window does it apply to? And will the hinge and inner display be covered beyond the standard warranty for early buyers?
A company that says "we reinvented the foldable" inherits a higher burden of explanation when the category's oldest problem appears in its product. "We don't know yet, and we're testing it" is a credible sentence. "No comment" is not.
Credit where it is due: Apple acknowledged the issue within days and is replacing units without a fight. That is better than denial and better than Samsung's first response to the Galaxy Fold in 2019. But Samsung's fix included delaying the launch and redesigning the hinge. A warranty process is not a redesign, and if the cause is the geometry, every replacement inherits it.
If the hinge is the problem, why is the answer a repair queue?
Sources: The Wall Street Journal, Reuters, iFixit teardown, TechRadar, VRT NWS.