I, also have this issue with the S3. I have the stock earbuds, which do have a mic, and listen to music while on the local buses. I keep getting nasty looks every time my phone rings. I called Samsung a few days ago, and according to them, as well as another site I found, it's in the design of the phone. I'm considering trying stereo Bluetooth, and see what that does. If it solves the issue, great, if not, then once the phone is paid for, I will purchase another phone, that hopefully won't have this issue.