What about the thousands of people useing cell phones in modern cars that have way more electronic equipment than a lot of aircraft?
They're not having to send and receive information vital to the safety of 300 passengers over the RT are they ?
As Whirls has already pointed out, we've all heard the "bup-bup-bup" sound through the radio or computer speakers caused by the mobile phone. Imagine having that going through your ears while you're trying to receive your departure clearance. "Say again ? "