video and remote

Im a newbie to the drone world just picked up a used Phantom 3 Pro from my son who has not used it in years. I updated the AC and RC to the latest firmware since it was not working. I think that is why he stopped using it. These are the current versions I updated to: APP 3.1.43 (DJI Go...

I use an Ipad Air 2 which is very choppy but also use a MOTO-G. The question is, while flying, it sure would be nice to have a compass display on the video - just a simple North (N), South (S), etc pointer. I know the little window at the bottom is there, but man oh man, it sure would be sweet...

This may be a rookie question...I have the P4P with remote with the screen attached. Is there a way to preview the video I just shot on that screen?