BTW, I suggust you don't leave your cell phone on during a flight. It will switch from digital to analog mode looking for signal and use up 30 hours of standby time in less than 3.
When you get to your destination, your phone will be dead. Good luck calling somebody to pick you up who's number is in your autodialer. I think it goes without saying how I know this.
I don't buy it. Any plane that's bothered by pipsqueak RFI from a bluetooth device isn't airworthy in the first place. God help us if they fly over a terrestrial XM repeater.