I wasn't talking about aircraft, by the way.
So, look into data how many people a year and how many hours spend in aircrafts-if they a not able to use his "smart phone" eg. in the case of emergency while @ 10km/33000 feet altitude this means this thing is useless without its base stations.
Can you call even another person of the same flight seating a 10-20 meters away without ground ba$se $tation? I do not think so..
Simply you can not communicate, only play stupid games on its a few inches '' screens.
It is clear, one needs good radio not those useless phones in many cases.
I need one too and It could be nice to have CB radio in wristwatch-no Android needed, but a piece of electronics...