Phones on planes

As we all know when you hop on a plane you have to put your phone into flight mode, the reason given for this is "That it may interfere with the planes systems" and touted as a safety issue. Well in an article circling the internet today it would seem that there is in fact no negative inpact on the planes at all. It has further been suggested that the real reason for not allowing people to use their phones is because of the nuisance value. Apparently airlines don't want a couple of hundred people all talking on their phones in such a confined space.