The problem I have is that the quality of dictation seems to drop precipitously when using something other than the microphone built into an iPhone. In my car,

The problem I have is that the quality of dictation seems to drop precipitously when using something other than the microphone built into an iPhone. In my car, Siri and dictation feel like a bad tech demo; as soon as I disable Bluetooth, accuracy shoots back up again. (And I know for a fact that the hands-free in my car makes super clear phone calls.)