My phone's rear camera

So the back of my phone, the section with the cameras and flashlight, is as big as it gets. After I bought and installed the first cable, the part got dirty and now there are stains on it. How much do you know?So the back of my phone, the section with the cameras and flashlight, is as big as it gets. After I bought and installed the first cable, the part got dirty and now there are stains on it. How much do you know?