I'm a old heli RC polot - and had a PV2+ (sold due to lag - lack of light bridge), lack of follow me and decent waypoint automation... and recently acquired a 3 pro. I'm I shoot catamarans over water (racing) and did some with the V2+ but the lag scared me. (didn't want to hit a boat or sail). Also lacked the features I wanted which I can now do with autopilot app. So the question... I found my 5c phone and ipad3 do not work. (the 3 works POORLY and slow with Litchi) so I ordered a ipad mini 2 (no gps) after reading reviews. It will be drone only really. Should I have got one with cell? I don't want data plan on it - but I read that the GPS works without a data plan. I then asked around and was told no I need a data plan for GPS. (but I think that's wrong). I figured I can add blue tooth GPS (that red puck 150/a I think it's called). I wanted to ask how important is GPS at the TX? I know I can fly without it... but I will often be controlling on a moving chase boat. So home will need to be changed... updated as the TX on a boat moves. Also for "follow me" of the TX wouldn't it need GPS? do I stick with the mini and add blue tooth gps? or should I return it for exchange of a mini with cell option (but not get a data plan?) I wanted a larger screen than my phone. But My ipad3 was quite heavy on my old V2+. The mini seemed like a good compromise - but wondering about GPS necessity and in what instance? I will be using it for complex flight modes, waypoints, follow me's etc. I checked the WIKI cool! I learned about light bridge) but didn't find anything on GPS at the TX/home point.