GoKawiilYouTuber's teardown points to thin hinge link as likely cause of iPhone Duo screen cracks
Reports of Apple's iPhone Duo foldable cracking within hours of use have spread across social media and a dedicated subreddit, with users noting the breaks consistently occur in the same spot. YouTuber CuriousHagi reproduced the failure during durability testing, then disassembled a unit to inspect the hinge mechanism, which combines a central gear hinge with two types of linking hinges.