did u actually read the iPhone's user guide before even posting this?

Two-Finger Tap
This weird little gesture crops up only in one place: in Google Maps. It means
“zoom out.” To perform it, you tap once on the screen—with two fingers.

or

Once you’ve zoomed in, you can then zoom out again by putting two
fingers on the glass and pinching them together.

This post has been edited by teikwing: Feb 21 2009, 04:04 PM