Was looking on the App store for downloads for my phantom and saw an app for DJI GO. please can somebody tell me what this is. I have not seen it before or heard of it, I may be behind the times as far as things go, (on some things but not all) what is it used for. have read some bit's on this forum and I see a lot of people are on about the iPad and different make's of mobile's. I use the blue tooth on my F550 but that is all, my mobile is a Samsung A3, so do not know if it is any good. Thanks in advance for any info.