I just did my first flight with a just purchased Holy Stone HS120D drone. I was initially perplexed that I could not get FPV on my Motorola Android phone running the "HS GPS V1" app, though could fly the drone from the controller. Then, by chance, I tapped on the "controls" icon at the bottom of the phone app and FPV was displayed and all app controls worked. As a new flyer, I just assumed that everything would just work as the instruction manual does not elaborate about the "control" app button but just notes "on/off" which I assumed would default to "on". I hope that totally new flyers might be helped by my inept experience.