Hi! I just replaced the entire screen panel on my Nexus 5x because it stopped working (it flipped 180* the screen and the image it showed was mirrored -- completely impossible to use the phone). I read several reviews describing the same issue and fixing it by replacing the screen panel. Now I'm having issues with the camera. The front camera works, but the back one doesn't. I reopened the phone to check it was plugged in correctly to the motherboard, and it was. Is there a way to figure out if it's the actual camera that's not working or if it has something to do with the motherboard?