There's a difference between using electronics and merely keeping it on. I don't see why we can't keep the phone antennas on during flight. I'm with everyone who said the whole interference with airplane instruments is BS. But I do agree we probably shouldn't be actively holding/tinkering/using our phones during takeoff and landings. They need to change their message. Instead of saying "turn off your cellphones", maybe they should say "put away your phones".

This is kind of like reporting that modern CPUs can perform more floating point operations per second than humans...