Yes it is the GoPro App running on my Samsung Note 2, but it is not applicable for FPV since the delay of the videofeed is about 1 second, plus if you are recording the Videofeed freezes 70% of the time, but it is so good for starting the recording and check the camera image.
On my Forum we pointed out that it has to do with the Remote of the Phantom, it doesn't use a Frequency Hopping System like the most modern Transmitters, so if sthe pecific 2,4Ghz Frequency of the phantom remote is already used it can result in a FailSafe. This also means that you can fly only one Phantom at a time, also people living in high density areas (regarding 2,4Ghz Technology like WiFi) will get interference more often...
The phantom remote is generally garbage, although I understand that modern computer driven remotes are quite hard to use and are quite expensive and that they wanted to offer a full kit, but people will push their boundaries and if the technology doesn't protect themselves or people around them, who does?
So this is a pretty dangerous game that DJI plays with us, if they aren't carefull and try to offer Full Packages that cheap, sooner or later bad things will happen and as we all know, our dear leaders will simply ban our hobby. So DJI should really think about what they're doing...