A new leak from China says the iPhone Duo screen cracks come from defective material at one of Apple’s two hinge suppliers. The same claim says Apple can find the affected phones by serial number, which would limit the problem to a single batch of hinges.
Ice Universe posted the claim on X on November 7, passing along what a Chinese tech insider named Kang shared. Apple has not confirmed a cause. It said on October 26 that inner display cracking affects a small number of units and told owners to contact AppleCare for a replacement.
iPhone Duo Screen Cracks Tied to One Batch
Kang puts the fault in the hinge material rather than the design, and says one lot from one of the two hinge suppliers is to blame. Owners cannot yet check their own phone, since no supplier or serial number range has been named.
Apple already replaces cracked phones when owners report a problem, and Ice Universe asks whether Apple will publicly identify the affected batches and offer replacements. Apple has told stores and service providers to treat cracked displays as a standard repair, with no recall and no repair program.
Apple Says Few Units Are Affected
CEO John Ternus told Reuters that only a very small share of units have come back over display problems and that Apple is replacing them. Mark Gurman reported that most people he knows who asked an Apple Store for a swap left without one because stores had no stock, and that AppleCare may fare better.
Fine M-Tech, the South Korean supplier linked to the display plate inside the hinge, denied a defect in its parts on October 26 and said it is weighing legal action over unverified claims. Kang names no supplier, so the claim cannot be tied to Fine M-Tech or any other company.
Teardowns Offer a Different Theory
iFixit’s iPhone Duo teardown found the breaks cluster near where the display cable passes through the hinge. Its simulation suggests the center support bar may not drop far enough, which leaves a stress hotspot under the folded screen, and iFixit says that still needs verification.
A second teardown, by YouTuber CuriousHagi, found the middle link of the hinge snapped at its notch beside the damaged display. That was a single dissected phone, so it does not show a pattern.
Until Apple says more, owners who see a crack should contact AppleCare to book a repair or replacement. Without AppleCare+, an inner display repair costs $999, which drops to $99 with coverage.
