I'm on my second Incredible for this issue. The call volume will randomly get so loud that using the non-speakerphone is like using the speakerphone on full blast. The volume control ceases to allow you to turn down the call volume, so calls are incredible loud both on speaker phone and regular mic to ear calls. It randomly does this for a time, then stops and returns to normal. I did the factory reset thing and swapped my first incredible for another, but the problem persists. Has anyone else encountered this issue? Any known fixes?