Built mine in 1965 and not progressed much since then but of course I'm only a G7
I did have a play with my GPS once on a trip to the US but not much to look at on a Garmin E Trex! As far as portable radios are concerned there is so much electrical noise in a modern airliner it's a bit of a waste of time.
Just sit back and enjoy the movie and food. (Especially if someone else is paying)
