p2 v+

P2V+ Phantom 2, vision plus, Version 3: Used and working has long range antenna and FlyTrex live. Has 4 batteries that have set for a while at 50% with no use, since now I have P3. Batteries work but not can say if batteries last long time. comes with charger and prop guards. only: $599 plus...

Just purchased a used P2 vision + , this is an upgrade from the toy grade quads I have been flying, first of all I would like to ask what is the best app to run on a samsung S4 ? And what settings should I check before I attempt to fly the first time ? I have downloaded assist app from DJI. Thanks