Design

What can you say about the design of the iPhone 5S that already hasn't been said with the iPhone 5? Let's face it: there's nothing really new here that's going to help you work out ifthe person sitting opposite you on the train is rocking an all-new phone.

Perhaps that's less of an issue now that the iPhone is becoming something of a commodity, a device that is so oft-used by the middle-aged generation that it no longer carries the lustre that the exclusivity of the earlier models emanated.

That's not necessarily a bad thing either; just because it's not an 'exclusive' design, it doesn't make the iPhone 5S any less premium.

It's still a stunning phone to hold in the hand, coming with the all-aluminium-and-glass chassis. There's no doubt Apple has had a look at the way the iPhone 5 range (well, black and white) chipped so badly around the edges.

That's apparent already in our iPhone sample within a week, so it looks like you're going to quickly need to stuff your new iPhone 5S in a case the second you release it from its box, lest you leave it in a pocket or bag with change and keys and it comes out looking like it's gone a few rounds with a randy cheese grater.

The new colours, which include champagne and space grey, are a little odd, but at least promise to show up the scuffs a little less prominently.

The way the iPhone 5S feels in the hand is something impressive though, coming with the low, low weight of 112g and dimensions of 123.8 x 58.6 x 7.6mm. It's still got that almost too-light feeling, that the premium metal finish is somehow diminished through the lack of heft, but it's a long, long way from feeling cheap.

Compared to something like the Galaxy S4 or LG G2, the iPhone 5S is miles ahead when it comes to design, although less so than the HTC One orOne Mini which have repeated the aluminium-clad trick.

It's got a slightly sharper edge than other models on the market, which can make it a little uncomfortable when being pressed to the ear. But we're not going to quibble too much there lest it makes us seem a little wimpy.

There are only a couple of real differences compared to the iPhone 5, and one of them really is miniscule: the camera module is now flanked by a dual-LED flash, which we'll talk more about later (it's a really rather nifty piece of technology, trust us).

The other is a lot more substantial and impressive: the home button has been redesigned.

Yes, it doesn't sound like much, but consider how iconic the Apple home button has been over the past half-decade, and you'll see why we're holding the change in such high esteem. The visual effect is impressive, taking the square off the button and putting a fancy silver ring around the key.

The effect isn't only aesthetic, as this area now also serves as the fingerprint scanner, home to Apple's new Touch ID technology.

Having bought two separate biometric security firms, Apple was likely to do something like this, but the implementation and visual effect is really something that Apple does well, and has done so here too.

Beyond that, the iPhone 5S is identical to the 5, even down to the rattle in the home button. We're still a little confused as to why a device with such a high build quality has a slightly loose part with it, but shake the iPhone 5S gently and you'll feel the key moving around.

It's not a big deal, but every so often you'll note the motion, and it does detract somewhat.

Thankfully the rest of the phone is built impeccably. The round volume keys are easy to hit. the switch to enable volume on or off has the same sturdy feel that we've come to enjoy, and the headphone port is still welded to the bottom of the phone.

The Lightning connection port is here as well, along with the stereo speakers on the bottom of the phone. We wish these were placed somewhere else, as when cupping the phone in landscape mode it's far too easy to cover these with palms or digits, and there's not really any way to shift around them.

You can always use headphones, but that kind of negates the point of the speakers for gaming at all.

Now the right hand side hasn't been left completely alone on the 5S, with Apple choosing this surface as the location for the SIM card tray - but unlike most smartphones that take microSIMs these days, iPhones now rock the tiny nanoSIM technology.

There's also the new leather cases, which are something of an oddity for a brand that's just overhauled its whole outlook with an all-new operating system. They're slightly cumbersome, making it hard to hit the buttons, and they get scuffed so easily - all for £25.

But beyond that we're still impressed with the design of the iPhone 5S. It's hard not to be, as if there's one thing that Apple gets totally right it's the way it assembles its devices.

The metal and glass combination does feel a little fragile, and we'd recommend a case (perhaps a third party option) to protect the aluminium, but the design is something that at least helps mitigate the higher price.