Idenified Back side camera having a dust inside and it's annoying to see this kind of issue. I don't know how come premium smartphones doesn't have any Ingress Protection.?
As per your query, we request you kindly visit the service center for a physical inspection of your device. So that they can check the exact issue with the device and fix it at the earliest. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/
