The iPhone 6 is here, it's awesome and you probably already want one.
But even if you watched the announcement live, you probably missed a huge amount about what's actually new inside the sleek 6.9mm of metal, glass and hype.
From the details of the Retina HD screen to the fact that the phone, for some reason, has a barometer, there are a bunch of interesting features that while they're not quite 'hidden', are certainly under the radar...
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