I started out on an Idea7 drone (mavic knockoff that uses phone app for video/ controls) along with Google cardboard type vr goggles.
The picture quality is actually crisper and more vibrant than analog, but for freestyle (or generally any serious flying) the latency is so crazy that by the time I'd see an obstacle I'd have already crashed into it. Plus I suspect with phone doing double duty of processing and pumping out live video really slows down response time.
Essentially cheap wifi drones have super slow reflexes.
Basically, what the other posters said, but dumber. (Hope I understood question right. Not sure if you're talking about putting an analog receiver on a phone inside vr phone-holder goggles, which is super heavy on the face; or a cheapie wifi drone)