why does my phone use the front camera and flash for rear

[Hashimz]

My phone is an infinix hot 3
It was working nice before I decided to replace the rear camera that was spoilt,it was not clear at all but atleat it could show it works.when I installed a new rear camera,I go to the camera app and all I can see is the inverted image and camera opt icon disappeared,selfie flash and camera substitute for rear even when I try to turn on flash light.tried using VLOG SNAPCAM for opt icon but it tells me "no front camera found".can't even find camera app in default settings, I tried factory reset too but did not work.
Please friends! HELP HELP HELP
cause am really running insane.

 

[B. Diddy]

Welcome to Android Central! It's always hard to answer these kinds of questions, because you'd need input from someone with lots of experience taking apart and repairing that specific phone. I think it's safe to say that for a relatively uncommon phone like yours, there won't be many people on these forums with that kind of experience. You should probably take it to a qualified technician and see if they can figure out what went wrong.