iPhone Duo fails durability test, raising design concerns

Apple's first foldable iPhone Duo failed JerryRigEverything's durability test, raising concerns about its design after reports of display damage emerged shortly after its retail launch. The device's inner screen and hinge showed notable weaknesses under testing. The inner display scratched at level 2 on the Mohs hardness scale, vulnerable to fingernails, while the outer screen resisted scratches until level 7. Dust particles jammed the hinge, preventing full closure despite Apple's IP68 rating, and direct flame caused burn damage after 10 seconds. The bend test produced green lines before the inner screen failed completely. Replacing the inner display costs $999 without AppleCare+, making accidental damage expensive. The test underscores trade-offs in foldable designs, suggesting users should keep the device closed when idle and shield the hinge from debris, though broader design implications remain unclear.