You will do fine with P3S. I have tried some mobile options and almost all of them worked fine.
Asus Zenfone 2 didn't work with DJI app, but it did great with Litchi App.
And both DJI and Litchi ran pretty well on iPad 3, iPad mini 2, Nexus 5, Galaxy S5 and a galaxy S6 edge.
I have heard a lot...