iPhone Duo screen cracks traced to failing hinge part

A suspected cause has been identified for a small number of iPhone Duo screen cracks, with a failing hinge element believed to be responsible. A sheared-off part of the hinge mechanism may strike the display, causing the characteristic damage pattern. Evidence from a YouTuber's teardown shows a hinge component that broke at the same location as the screen crack origin. This element is thinner than adjacent hinges, and crush marks nearby suggest a misalignment that led to the part shearing and impacting the display. The issue remains limited in scale, as checks at seven Apple Genius bars on October 24 found only one reported instance. While the problem is real, it is not yet widespread, and users are advised to avoid stressing the hinge and to report any failures to Apple.