As a regular passenger, I DON'T want phones, it's the only place I get away from them at the moment!
My company also carry out EMC testing on machinery, and we see numerous occasions where manufacturers have followed guidelines and codes, and still there are problems. Not so much of a problem in a factory on the ground, but at 30,000 feet it is a different matter.
I believe the reason the latest trains were delayed for so long into the UK was that EM interference from the electrical systems was interfering with the signals. From memory, the delay was about 18 months while they tried to get it right by testing all possible configurations. Can't see that is possible to do that level of testing on every model of aircraft.