How to Use the screen lock and spell check features on an Apple iPhone 4

In this clip, you'll learn how to use two of the lesser-known new features of the Apple iPhone 4 — to wit, the screen lock and spell check tools. Whether you're the proud owner of an iPhone 4 or are merely considering picking one up, you're sure to be well served by this video tutorial from the folks at Butterscotch. Take a look.