Yes. Right beside the space bar. When I press it, it activates and makes those squiggly lines like it's awaiting my voice but it doesn't hear my voice.
Did you check that voice dictation is on for under Settings> keyboard. If yes turn on and off. Also click on airplane mode then off and see what transpires. It may be a funky network connection. Check your Siri settings too, it has some dictation options there.