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The mapping feature on your iPhone is great - find your current location (just tap the circle on the left side, bottom, of the screen) and then tap Directions. Enter an address (or get one from your Contacts list) and you're on your way. You can get driving directions or an overall map of your route complete with a blue line going from here to there.

But how can you see details on the map?

You can use "the two-finger spread" - put two fingers together in an "I", place them on the screen and just spread them apart into a "V"- you'll zoom in. Another way to zoom in is the just tap the screen twice with one finger. If you need more detail, tap with a finger twice again. Your map will zoom in.

Zoom back out by making a "V" with two fingers, touch the screen with both fingers, and then move the fingers together (into an "I"). An easier way to zoom out, however, is just tap the screen with two fingers. Keep your fingers an inch apart and tap. The map zooms out. You can continue tapping with two fingers until you've zoomed out to a map of the entire U.S.