Originally Posted by bollar
It doesn't have to reach the cockpit in order to cause interference. Being near a nearby antenna or wiring harness may also suffice.
As I've mentioned in other threads, it has been demonstrated to me that electronic devices in the cabin can cause interference on the radios. IMO, the interference was not flight-threatening, but I must reject any argument that suggests electronic devices can not have any impact at all on the aircraft.
What kind of aircraft did you experience this in? Was this a commercial aircraft?
In Bluetooth we are talking about 2.5-10mW of power, that isn't even enough to penetrate the plastic wall to get close to the cabling, plus Bluetooth devices don't have a very good antenna.
Considering some airlines (like Lufthansa) are now offering their customers WiFi equipped laptops it's clear that all the talk of problems from LOW power devices was just poppycock...
I'm still not convinced a high(er) power device like a cellphone is safe yet though.