Before you start thinking about relying on the iPhone compass app for your next hiking trip, you might want to read the results of tests performed by TechHive. While some believe that the compass issues are limited to the new iPhone 5s and 5c, the tests showed that the problems go well beyond those two models.
The TechHive team used the Compass app in both iOS 6 and iOS 7 on a range of phones from the iPhone 4 to the iPhone 5s and 5c. All phones were re-calibrated several times, and the testers found that the results varied greatly regardless of location (inside or outside). The expensive phones were tested against a reliable and cheap -- US$15 -- Suunto A-
