Phoenix Wright: Ace Attorney Codes -

Hidden art:
During the Case 5 ending credits on the touch screen, fingerprint powder will blown away. Eventually, a dialogue scene with a character will appear. Tap the touch screen at this time as though applying fingerprint powder to it and blow it off (as done during game play) A hidden drawing of that character will appear on the top screen.

Fast forward conversations:
You can fast forward through long conversations by holding down the forward arrow on the bottom screen with the stylus. A fast forward symbol will appear and the conversation will be completed a lot faster than normal.