Originally Posted by angatol

How do I know practically nobody turns them off? Well I've previously done scans for wifi (which shouldn't be on at all during the flight) immediately after take off and found devices *transmitting* wifi accounting for one-third of the total pax on board, seemingly. So if that many can't even be bothered to enable flight mode, there don't seem to be that many who seem to be bothered about turning stuff off for take off in the first place.