Turn your mobile phOne on and stick it near to your PC. Then listen to the speakers as the phone signal inbound/oubound makes seriously annoying noises as it interferes with bits on your PC.
When phones are used on aircraft, quite often - admittedly not always - that same dreaded noise comes through the radio.
Now my aircraft is not a 737 and has a lot of computers on it. So forgive me if I totally support the non-use of something that interferes with computers.
It's a phone.......learn to live without it for a short while now and then.