Tried it yesterday. Video image on iPhone 6+ very bad and laggy. That is to say at a distance of only 150 m away, the image would freeze and then not update for 5 - 10 seconds. Horrible. This at any range. Was there a controller update too? I didn't seem to get it. iPhone was in Airplane mode.
Curiously, the video in the
DJI Goggles was perfect and I did 2 take off to landing FPV flights with ranges exceeding VLOS for my spotter. Mild vertigo at times.
Flew the
P4P in both 2.4 and 5.8 GHz with no issues. VLOS to 800+ m. (Against the sky hard to see, but against the distant and dark pine/spruce tree line the
P4P was quite visible.