Light grey circle on photos clicked with main camera.

[Khalnayak17]

Since a week I've been observing a greyish cicle on the photos clicked with the main 48 mp camera.

I don't know why is it happening but it's surely a hardware problem, as photos clicked from other two cameras does not have that.

I've circled it on the photos. 

[User28]

It is a problem with the camera lens. I faced the same problem in my older LG phone and it was resolved only after they changed the camera. Fortunately the phone was in warranty and hence the replacement was free of cost.