Faster, new camera and a clever fingerprint reader. But is it enough of an upgrade

The iPhone 5S: a phone that looks like the iPhone 5, but goes so much further under the hood. Is that going to be enough to impress the baying hordes?

We've been here before: the iPhone 'S' conundrum. The new phone comes along, taking the shell of the previous model, adds some new bits and pieces, and then claims to be an entirely new phone.

Scores in depth

Which it is, of course. But also it isn't. Well, mostly is. To be sure, it's the kind of move that only Apple can pull off with any kind of conviction: the notion that it can take the same chassis, have a little tinker, throw in a new CPU, slightly better battery and camera, and call it an all-conquering device.

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