I live in an apartment. When I go to my living room, a pop-up shows on my phone (Samsung Galaxy) asking if I want to connect to a Samsung TV and cast my phone.
The catch is: I don't have any Samsung TV in my home. It's the neighbours TV. It happened even when my Bluetooth was disabled, somehow the phone still reached the TV wirelessly.
Thank God there's a setting to turn this "feature" off.
I have a Samsung TV (never connected to the the internet in any form, just connected to my PC via HDMI) and a Samsung phone and never had either ask anything about the other. Curious what would trigger that. Possible that I disabled things I know I won't need and forgot about it.