It happened some with my old phone, but nothing like it does with my iPhone. I can't keep it by my bedside anymore because my computer speakers go CRAZY with that annoying sound.
Same here. "Without going into much detail .... the way GSM works is the phone checks in with the tower at a set interval to see if the tower has any calls waiting to be sent. This helps conserver battery power as the most power hungry device in the phone (the transmitter) isn't always powered on.
When the tower alerts the phone during one of these "check-ins" the phone connects and the call goes through."
I just keep it AWAY from all speakers. The problem is when I want to connect it to my stereo in my car, instead of my iPod. I still have an old fashioned tapedeck. The tape-direct connection works better than the radio frequency one, but the buzzing can be bad. Somebody suggested putting tin-foil around the connector. First, it's not very pretty in my beautiful car. Second, it doesn't seem to work!
The only think that works in putting the phone in "airplane mode". But then, bye, bye phone functionality. I don't think anything can be done.