But surely a "front facing" camera should "face" the "front", not "be on" the "front". A "front facing" camera that is "screen side" will face my front, so maybe what works. but a "Back-facing" camera doesn't face anyone's back ... unless I'm stuck in a queue. "Case side" works for me.
But that wouldn't be the only part of our delightful language which is back-to-front (Q: does English encourage you do view the future as in front of you, or behind you?)