When most of us think about orienting ourselves when we’re lost, Apple Maps or Google Maps are the first tools that come to mind. While there’s no doubt that these GPS-powered navigation apps are helpful, sometimes you just need to quickly figure out which direction is north. In those cases, your iPhone’s built-in Compass app comes in handy….

Check out the original article: [Slashgear] How To Calibrate The Compass On An iPhone