I use at Ipad 2 mini - it fits perfectly on the controller where a smart phone would go - i always put it in airplane mode - only thing I recommend is you need a 90 degree cord to plug into the ipad so its not in your way as you hold the ipad and controller wings at the same time - furthermore, tablet view gives you the radar chart on the bottom left as well which aids well.
Only downfall is you need to upload the maps to it before you fly if you want to use the map flying feature. I don't use that map much and I just tilt the camera to see where I am - I have the joystick programmed for a quick 90 degree rotation of camera.
You will need a sun shade or go fly from the shady area.