You buy a TV for the picture, not the smarttv-functions. Theres Nvidia tv pro or apple tv for that

Phone app > 3 dots > settings > call display while using apps > mini pop up

Is what i use, then its easy to just drag it away to hide, and it doesnt interupt your gps or whatever

Yeah fake. And u can tripplecheck in Appstore-app, search for cpu z or aida64

The app will tell u what kind of cpu etc in ur phone

I dont use that. But i think u can hold on the wrong word and delete it?