Do you have any older or want use android phones, ipad, iphone ,Android Tvs for fully functioning secondary screen then following are the 2 best free programs that lets you do that Spacedesk : Space desk is one of the best Software for using fully fledged screen sharing and you can do drag drop in both screen. You need a Pc client and mobile client to use it also yes needed on same network How to install & use it: - Connect both devices android phone, tablets, tvs on same wifi network - Install spcaedesk Pc client (Link below) - Open spacedesk and turn on active status at top of window - Install spacedesk mobile client [ios / android] - Open it it will automatically search for available devices - Click on Connect - That's all, you are good to g...