Everytime I used Smart View with my Samsung TV I see the wallpaper on my phone and two action buttons appear on my TV.
I do NOT see a mirror image of what is on my phone. It looks like maybe the intent is to allow users to extend their phone display to their TV so you can have separate apps running at the same time.
However I cannot for the life of me find an option to just mirror exactly what is on my phone display to my TV.
Smart view is screen mirror not extended. the only option that's close to extend is DeX and that's only available via HDMI or USB to a PC. Most likely the two action buttons you are seeing are the ones to change display settings and disconnect from display. by default when screen mirroring the output feed is in some funky aspect ratio. you need to change it to 16:9 in order to fit your tv. also if you have any screen overlays like the ones that use a ring around the cutout for battery you need to turn it off or it will show up on the connected display. lastly some apps depending on their security policies won't show anything on the mirrored display.
