Front facing camera not working

Never did figure it out. I checked every part on the camera circuit down to board level, replaced everything it was possible to replace, never could get them working.

There is no good reason why a screen swap would kill these camera but it happened. The only thing I can think of is if the camera IC somehow got fried but I can't imagine how replacing a screen could do that.

I chalked this one up to gremlins, looted the working parts out of these and sent the boards and cameras off to the junk pile in the sky.

Same problem. It is common...google it. The standard answer of factory reset and updating ios does nothing. I replaced camera itself with new part and still not working. This does seem to be a main board issue.