Use the compass with maps. The Compass app works with the built-in digital compass to tell you which direction your iPhone is facing. And in the Maps app, the compass rotates the onscreen map to match the direction you’re facing. Following is a quick guide on getting it to work.
1. Tap the Location button in Maps twice to use the built-in compass. (Following icon will appear)
2. This will orient the map based on the direction you are facing.
Compass reliability may be affected by usage conditions such as nearby magnetic fields.