The iPhone is a revolutionary device thanks to its user-friendly interface and sleek minimalist design -- but that doesn’t mean it’s always straightforward.  Many of the iPhone’s advanced or lesser-used features are hidden away and Apple doesn’t always do the greatest job of filling you in. This beginner guide hopes to help point these features out (also available for iOS6). This version of the Beginner guide is intended for iOS5 users. If your phone is up-to-date, read MakeUseOf’s iOS6 version instead.