iPhone 6 + rear camera not working – bundle of problems ! old iphone set problem

Hi

I have an iPhone 6 + Along with a faulty rear camera, when I open the camera app, it get freezed, I can not take any picture or video.

The front camera is working.

What I did:

– Clean restore to ios 8.1 Along without restoring any backup, the same problem.

– Reset all setting, nothing.

– I did disassemble the phone, disconnect the camera from the mother board, and connect it again, still the same issue.

If I change the camera, it will work? because the flash led is not working as well.

thanks.