Find My Phantom - the User Manual is less than helpful on this feature. Does anyone know how this feature works? I understand it uses GPS for the location, but where do the maps come from? Does this feature require a data service, or are the maps stored in firmware on the Phantom? Or Are they In the DJI app on your iPhone/iPad/Android device? I've been playing with it before takeoff and sometimes it works and sometimes it doesn't. Has anyone found a reliable way to get it to work while you know where your Phantom is and just want to make sure the Phantom thinks it's at the same location? My interest is trying to prevent flyaways. My experience is it's been very unreliable. Sometimes it does find itself, other times it finds a previous flight location (this one worries me!), and sometimes (usually!) it finds nothing.