Flashback: iOS 4 adds multitasking, FaceTime and other important features

Flashback articles often focus on hardware features. For example, in the iPhone 4 story we talked about the new Retina Display, the upgraded camera, the glass and metal sandwich build and so on. But software can be just as important as hardware, if not more so. The iPhone 4 launched with iOS 4, which introduced FaceTime video calling paired with Apple's first front-facing camera. However, the iOS 4 launch meant a lot to owners of older iPhones too, since it made their devices much better. In fact, iOS 4 may be one of the most important releases for the platform. First, we have to...

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