From step 4's second image[0], three of the components (maybe dot projector, IR, and Camera) are in the main housing. The YouTuber shows that Face ID works even

From step 4's second image[0], three of the components (maybe dot projector, IR, and Camera) are in the main housing. The YouTuber shows that Face ID works even if the 'sensor assembly' is unplugged[1]. 0: https://guide-images.cdn.ifixit.com/igi/QtDRKJPM5CKm31ki.huge https://guide-images.cdn.ifixit.com/igi/QtDRKJPM5CKm31ki.hug... 1: https://news.ycombinator.com/item?id=28663852 https://news.ycombinator.com/item?id=28663852