EVERY iPHONE & iPAD USER SHOULD K ESSENTIAL TRICKS & TECHNIQUES FOR THE iPAD AND iPHONE I I. I. l S T RATIONS II > II * II 11 1 C A M t II K I. I. Using an iPhone or iPad isn't hard. You probably didn't need a class, book, or on-screen tutorial to get started with yours. If you're like us, you just tapped here and there until the thing did what you wanted it to do. That's why many of us have holes in our iPhone and iPad knowledge. You might know how to do the things you do all the time, but you're not so certain about the things you only do once in a while. Maybe you know all about working with text or taking photos, but you're a little hazier on Bluetooth devices and printing. We all have our gaps. That's why we came up with a list of 12 things we think every reasonably savvy iOS user should know how to do. To para phrase something we said this time last year ("100 Things Every Mac User Should Know," April 2011), you probably already know many of them. But we're also betting you don't know t hem all. Here's your chance to learn, April 2012 Macworld 37