iPhone Air review: The thinnest iPhone ever, but at what cost?

Every so often, Apple makes a design decision that draws a line in the sand. One that feels like a delineation between one era and the next. The iPhone Air is that kind of device. It’s strikingly thin and sets a new standard for how an iPhone should feel in your hand.

The iPhone Air is also an example of the compromises that come with pushing the design boundaries of a form factor. The question is whether it correctly strikes that balance. I’ve been using the iPhone Air since it was…