Apple is absolutely desperate to gain a foothold in the mobile market – what other explanation can there be for this incredible handset?

When the original iPhone launched, the tendency was to forget about its faults. After all, the handset had been a revelation since Steve Jobs first announced it at Macworld in January 2007.

The lack of 3G was a big problem, while no GPS, proprietary headphones, rather average battery life, poor call quality and a rubbish camera were all logged on the wish list. Now we have a handset that seeks redress with those foibles – the iPhone 3G.

If you haven't used an iPhone before, you'll simply be amazed by the function and feel of this handset. If you have, things won't seem much different, but improvements have been made almost throughout.

Pictures won't tell 1000 words

We said that improvements have been made 'almost throughout' because this still doesn't have the camera that many desire. The included 2.0 megapixel job is only suitable for quick snaps, but the ability to directly email your pictures means that we used the original iPhone for such diverse things as emailing snaps of clothes in shops, to sending the image of a packing label to a courier company.

Video software is allegedly imminent, but we don't anticipate using it at this kind of quality level.

But that's the only real gripe. Apple has improved the look and feel of the actual hardware. The footprint is much the same, though it's slightly thinner. The main change is its black (or white) plastic back.

Metal fans get nostalgic

If you've owned an original iPhone you might well feel a certain attachment to your metallic-backed handset, but the plastic apparently complements the hidden antenna. The silver buttons on the sides also improves the appearance of the original iPhone, which still looks slightly hotchpotch from behind.

Crucially, 3G means data transfer is far faster – as you'd expect of course – and data seems to work a lot more happily with this device. Sometimes the old iPhone would simply crawl.

And that's the only disadvantage with having a full mobile web browser – you can't use WAP sites when the bandwidth gets tough. Email support is much improved – with Exchange and Mobile Me now sitting happily alongside the webmail providers. Mobile Me is so far unproven in our eyes, but that's a whole different story.

GPS is a welcome addition, though we'd say the Maps app needs a lot more work to take advantage of it fully. It isn't completely clear when the GPS has a lock on, while it doesn't seem to follow your route brilliantly either.

We'd point to the quite excellent (if slightly complex) Nokia Maps, which can even help with navigation on foot and orientates the map toward the direction of travel. Much nicer, so this aspect needs improvement, especially since GPS is one of the main selling points of the new iPhone.

We've looked at the iPhone 2.0 firmware in more detail elsewhere, but we'll still refer to some of the new functions here. The new App Store is a welcome addition alongside third-party apps. Some are fun, like the £5.99 Super Monkey Ball, others ridiculous, like the free iPint.

Where's your Google now?

Productivity hasn't yet really been catered for yet – where are all the Google Apps we were expecting? Or MSN? AIM is there, but who uses it? Anyway, a nice touch is that there's a little indicator on the app icon to display any downloads.