When I'm speaking to someone with my 3650 the voice of the person I'm talking to is often quite bad in quality, like it's been heavily compressed or something. What's up with that? Any solutions for this? Thx.
edit: firmware is 2.50 btw...

My N3650 Sound Quality is nice! Voice conversation is very very clear
as compared to other nokia models. I think it is the prob with ur piece
or may be bad quality Network! ... Check out!

Its so because that the speaker plays speaker role and loudspeaker.