IT’S hard to be creative with modern smartphone design. There’s only so much you can do with a rectangle.

Yet somehow Apple has managed it with the ludicrously thin iPhone Air , a first for Apple. I’ve been using Apple’s “thinnest-ever” mobile in secret over the past week . And yes, it really is very impressive.

I know what you’re thinking. Creative? It’s thinner – so what? How hard can it be?

Well, very hard, it turns out.

Usually when you make a phone very thin, you have to make compromises.

Often it means a rubbish camera, a tiny battery, a low-quality screen, or a mix of the three. Buy at John Lewis

And then you end up with poor processor performance because everything is so crammed in that the chip can’t stay cool.

IPHONE AIR DESIGN

Apple has, miraculously, delivered wh

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