Apple iOS 4: 10 best features

Multitasking might be the biggest news in the latest version of the iPhone OS, but it has plenty of other useful features and refinements, too. Here's a hands-on look at our 10 favorites.

Misspelling words while typing on the iPhone's small on-screen keyboard should be less troublesome with iOS 4. The update introduces a systemwide spelling checker that extends both to native apps and to third-party apps (at least the ones we tested). You also get a new cut-and-paste option that lets you replace certain words with the clipped text.

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