The little microphone icon disappeared from my Galaxy 3 keyboard a couple of weeks ago, and the mic icon does not appear as an option when you hold that button on the keyboard. All of the other options are still there but the mic button is completely gone. It doesn't show up on the keyboard in any programs.
S-voice still works. However, when I try to use the voice input option in Google Maps, it crashes as soon as I touch the mic icon. When I open a browser window and try to use the voice input option, when I touch the mic icon, it says Google Voice Search is busy, or need better connection (it does this everywhere so it's not a bad connection problem).