Chosen Solution

After a screen replacement both cameras and flash light aren’t working. The earpiece wasn’t at first either, then I replaced the front camera ribbon cable and proximity sensor. Earpiece started to work but the cameras are out showing a black screen. Any ideas?

Maybe the connections are not fully connected.

Were the cameras working before the screen replacement? If the LCD was broken and you weren’t able to check them, its possible the cameras were damaged on the motherboard at the same time the screen was broken.