Hate the Markerfelt typeface used in the Notes app on your iPhone? Check out this hint:
First, go to Settings » General » Keyboard » International Keyboards, click into the Japanese keyboard, and enable the QWERTY keyboard.
Next, open Notes, and start typing a note. Click the globe icon next to the Space Bar to switch to Japanese, and type a character. When you do, the Notes font will change from Marker Felt to Helvetica.
Here’s a video of it in action.