Voice announcement of phone calls? When my phone gets a call it announces either the number or contact of caller. Where can I turn this off or on? 
I am using Galaxy S3 / Android 4.0.4.
This happens when you have Driving Mode enabled on the S3. Pull down the notifications bar, scroll to the right, and disable Driving mode.

That being said, on my S3, when I reboot with driving mode on, it comes back with it still enabled though the menu says it's not. Just enable it and disable it to make it go away then.