Apple did something wild at its big annual new iPhone event on Tuesday: It announced a phone that’s actually new. It’s called the iPhone Air, and it’s thin — “the thinnest iPhone ever” — light, and eye-catching. Also its battery life sort of stinks.

You might not want a super thin phone with crappy battery life, but that’s probably not why Apple built the iPhone Air.

Apple built the iPhone Air after years of releasing iPhones that looked and worked the same as the previous year’s iPhones, each new model only slightly better than the last. But its competitors have been getting creative, releasing phones that fold in half or unfold to create bigger phones. Several industry analysts believe that the iPhone Air is just a test run for Apple’s own folding phone: If you attach two iPhone Airs w

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