Why Can't iPhone Duo Users Make Eye Contact on FaceTime?

FaceTime's Eye Contact setting is missing on the iPhone Duo, MacRumors can confirm. The setting was first flagged as absent by MacRumors forum member TwoBytes , who noticed their eyes looking "a little off" during a call. Introduced in iOS 14, Eye Contact uses machine learning to subtly adjust your eyes during a video call to make it seem like you're looking into the camera lens, even though you're actually looking at the image of the other person on your screen.