I use it with my iPad Mini wifi only (no cell connection). Works fine, although I have to download the maps while it's still on my home wifi, before I switch it over the Phantom wifi.
Have used my Samsung galaxy note 10.1 a couple of times without any problems, just download the vision app direct from the dji website as not available through the play store.
If I'm using my iPad Mini without cell connection, I load google maps beforehand while I have a wifi connection and do that every time I fly. If I'm using my cell phone or my iPad Air with cell phone then I don't have to. I do have to remember to enable the cell connection on the Air at some point before I take off.
Relative to size, bigger is better. I have a bracket for my iPad Air as well as the Mini.
I did some research on others and they were 10.1 inch viewing area. My apple is 9.7 inch viewing area, not to much difference in viewing area. I just never saw others when I bought the 2 apple tablets.
How's the 10.1 when outside .Do you have much dramas with screen glare or do you have a cover over it .Looking at getting one but wasn't sure if it would be worth while changing up from a 7" tablet if I still had trouble seeing the screen properly .