I'd assume the factory is very brightly lit, which makes high-quality photos easy on any camera.
Notice that the field depth extends from very close to the camera all the way to the background... typical of the short focal length that you would have on a low-end, small-sensor camera like that in the iPhone.
Hm, yeah .. I guess you're right.
I will concur that the pics do seem like "extra" high quality or something.