No Apple TV around

When I’m at school I get these random popups on my iPhone asking if I want to connect to this Apple TV. But it come and goes away faster than I could even react. When I go into the control center to see if anything connected to my phone the touch of the screen freezes but the phone is still running. Eventually it goes black with “loading circle” and then restarts. The confusing part is I have no Apple TV under my account and I asked IT and there is none at all on the campus. So I’m getting kinda worried. Maybe something unknown is connecting to my phone. This was happening to other iPhone user around me at a synchronized time. Hope it’s nothing too bad.

Here are the popups I was getting:

I didn’t touch my phone AT ALL when this happened