Actually Ray Darr, your post regarding the background of how the mobile phone ban came about is not correct. FAA does not specifically ban the use of mobile phones, FCC does, nor did they approach FAA and request a ban on such. In fact, FCC is now ready to remove the restriction. FAA has always maintained that no electronic device can be used onboard until it has been determined that it will not cause adverse side effects, (interference). This determination is left up to the aircraft operator(s), hence the different policies regarding when and if devices can be used by the various air carriers.There is quite a bit of anecdotal evidence pointing strongly to mobile phones AND other portable electronic devices causing interference, studies are ongoing. You might find this of interest.
http://www.avionicsmagazine.com/cgi/...06&file=qa.htm