Apple admitted that the internal screen of the iPhone Duo could crack. Bloomberg. Owners hear a crunching sound when opening, and then a crack appears along the fold. Apple guarantees a replacement through AppleCare. It doesn't work in Russia. Also, Apple didn't even adapt its apps to the iPhone Duo. Users have found that the proprietary Apple Store app does not open on the full screen of a foldable smartphone.

Apple admitted that the internal screen of the iPhone Duo could crack. Bloomberg. Owners hear a crunching sound when opening, and then a crack appears along the fold. Apple guarantees a replacement through AppleCare. It doesn't work in Russia. Also, Apple didn't even adapt its apps to the iPhone Duo. Users have found that the proprietary Apple Store app does not open on the full screen of a foldable smartphone.