This is so cool and useful! On an iPhone there is bound to be some app that a very long list. It may be your musics list, Safari bookmarks, or even your videos.

In any case, to get to the top of any list with one tap, simply tap on the status bar/title bar – by this I mean where the time and battery status is located (the very top).

Not quite as useful as the magnifying glass trick but very thoughtful nonetheless.