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As fanboys and girls anticipate Apple's big iPad announcement on Wednesday, you're probably looking down at your scratched iPhone and starting to feel like it's kind of tired. In gadget years, the iPhone 4 is getting old. The fragile glass screen is still easy to break; the sharp edges are still difficult to grip; and the teeny buttons on the sides are still hard to use. If you are feeling morose about the lack of an iPhone hardware update, however, there are a few hidden features we've recently discovered -- many of them in the Accessibility area of Settings -- that will make your phone feel brand new again. While these features are designed to help the disabled, notably the vision- and hearing-impaired, there's a lot of utility for everyone in tinkering with these Easter egg-like tricks.
Triple-Click Home
How to unlock it: Settings > General > Accessibility > Triple-Click Home > Ask
Coolest feature: White on Black
There are few different ways to use this feature. You'll see five options in the Triple-Click Home menu, but we recommend ask. That way, when you push the home button three times, a menu will appear that will invite you to turn on three different features: VoiceOver, Zoom and White on Black. We'll get into VoiceOver and Zoom in a second, but you should consider trying Black on White right away. It essentially inverts your iPhone's entire color screen. What was once grey and white with black text will become tobacco brown and black with white text. Your maps will look like a 1980s car racing game, and best of all, your camera viewfinder will look like an X-ray. You can also activate this effect by going to Settings > General Accessibility > White on Black > ON. However, we'd recommend using the Triple-Click home to activate it as it's most useful when you can quickly toggle back and forth between the two looks. White on Black is especially cool when used at night or in night clubs.