So if something goes screwy with your aircraft, how is the tracked down to a Nokia 8210 in First? I'm always a bit scheptical about these things...how about laptops and CD players, what's the issue there? All I can assume is it's down to potential RF interference from their internal components. Could this really be a problem? I would think that aircraft avionics and systems should be designed more than well enough to cope with such problems. If they weren't your TCAS black box may potentially interfere with your FMS black box!?