iPhone X back camera issue

My iPhone X back camera is not working properly. There seems to be an auto focus issue, where the camera continues to focus and unfocus, triggering the haptic every time. Then the back camera heats up very quickly to the point where it's bit scary. I have restored my phone once, but did not fix anything. There is no dust in the lens that maybe causing this. For the amount that I am paying for the phone, this is quite disappointing. Is there any way to fix the issue?