Weird circles on my iPhone 13 screen
I bought an iPhone 13 recently and I've been noticing these weird circles on my screen whenever it's black and tilted at a certain angle. They do disappear for a while when I rub the screen but then they appear again. And even when I switch off my phone, I can still see them. What are these? How can I get rid of them? My trypophobia is acting up so pls help. I've attached pictures that I found on another thread here. Mine look the exact same.
iPhone 13