Apple iPhone 4G - Manual (Page 158)

Calibrate iPhone: Wave iPhone in a figure eight. You may be asked to move away
from a source of interference.
See the direction you’re facing: Hold iPhone level to the ground. The compass needle
rotates to point north. Your current direction appears at the top of the screen. The
coordinates of your current location are displayed at the bottom of the screen.
Switch between true north and magnetic north: Tap and tap the setting you want.
Compass and Maps
The Compass app lets you find your current location in Maps. Maps also uses the built-
in compass to show the direction you’re facing.
See your current location in Maps: Tap at the bottom of the Compass screen. Maps
opens and shows your current location with a blue marker.
158 Chapter 20 Compass