Chosen Solution

My iPhone out of warranty. 4 months ago the screen was changed because of a small crack. Dropped my phone ( front side hit the floor) and then I realized both camera and flash light not working. no crack on the screen. Is it because of the broken front camera that affects the whole camera system? I opened the phone following all the instruction in ifixit website and all the ports are connected and not seen any obvious crack or issue. I was wondering that it’s because of the broken third-party screen that affects the whole system.

One camera affects the entire camera system, is your flash is not working I’m a 80% that your rear camera is the problem.