I'm really frustrated because certain cell phone providers make my speakers buzz.

I have a Verizon phone and noticed slight buzz occasionally.
But, whenever anyone got in my car with a Nextel, the passenger side speaker would pop.
I just started a new job and they gave me a cingular blackberry/phone. This one makes the right speaker buzz. It is perfectly timed with when the arrows on the phone light up saying it's sending or receiving.

Any ideas on how to fix this?
I searched but it doesn't look like others are having this problem.
Thanks.

 

I have the same problem in my 93LS400.

I have cingular phone.

93LS

 

Its perfectly normal. it will do it to TV/home speakers as well. Nothing you can really do except turn the phone off.