Ever since I got my tablet two months ago, I always used it as a second screen for my phone (S20), but it suddenly stopped working.
I noticed this when I tried to connect an USB-C to HDMI adapter to my tablet, and it didn't recognize it
I don't know if it was random or an update caused it. My phone doesn't have any problem using quick share, and my tablet won't work as a second screen with my laptop either.
