Why the iPhone Duo screen is cracking  YouTubeThis Is What an iPhone Duo’s Crease Looks Like After 139K Folds  CNETThe iPhone Duo suffers because Apple mistook blind arrogance for fierce leadership  SamMobileiPhone Duo owners report cracks in Apple’s first foldable handset  The GuardianHere’s why the iPhone Duo’s hinge could be cracking the screen  The Verge