Phew!!! I thought this thread died! In any event, the only problem I have is with Hitec Electron 6 channel rx's. I use a Futaba 9C radio on channel 36. If I have my Verizon cell phone clipped to my belt, the rx glitches. If I leave cell phone in truck, I get no glitches.
My other rx's (Berg, FMA M5, Hitec 555 and Futaba 7 channel rx's) also have no problems with cell phone. Only the Electron rx. So,
it must be on the rx's circuit board or something.
My opinion, cell phones shouldn't be on or worn on the flight line anyways. Too much distraction if your setting needle valves etc.

Dave...