The microphone works when I am blowing the fingerprint powder, but when the game allows you to hold a button so you can yell "hold it!" it does not work. The game prompts me to yell it, but when I do, nothing happens.
This is just a minor issue, I suppose, but after you complete the last case in the first Phoenix Wright game, you are prompted to yell "Objection!" in front of Ema and since you can't, you won't be able to view the ending.