I've used my P3S a few times now, say 5/6, with now issues. However, last couple of times I get no signal once it goes beyond about 20 meters (beginner mode off). The video freezes, goes to black and white and the controller tells me no signal and I get option to come home. I can still fly it okay, and the video may come back on when it gets really close. I use an HTC One that has been fine since I first got my Phantom. Any thoughts?

Hello, possibly you ran into interference in that area. Please try to fly in another open area to see if it's the same or not.
Besides, please adjust the antenna while your flight.

Thanks, but tried it in two different, wide open areas with no interference. Same issue. Also tried moving antenna but didn't make any difference.

I've just discovered that the DJI GO app I have is version 3.1.1. As this was only updated on 13 Dec it must have updated itself. As all my previous flights with no issues were prior to this date, could this be the problem?