Touchscreen titans: HTC Touch Diamond vs 3G iPhone vs Sony Ericsson Xperia X1 vs Garmin nuvifone

3G iPhone
Since it hasn't been officially announced, there's little we can say about the 3G iPhone, but according to the rumour-mill, the 3G iPhone will pack a larger case, a front-facing camera for video calls and obviously let you access data at higher speeds than EDGE currently allows. But does that make it much better than the current iPhone?

Your pocket space will be reduced if it's made larger to accommodate a longer-lasting battery, but 3G is a known battery hog. It's also much faster than EDGE, however -- being able to connect to the Internet over 3G means that the Web experience is going to be faster, which is a wonderful thing.

It will also make downloading YouTube videos, for example, much faster and also more widely available, as O2's 3G network covers much more of the UK than its EDGE network. On paper, the iPhone doesn't compete with the HTC Touch Diamond, but it's not always what you've got, it's how you use it.

While we don't think the 3G iPhone will be perfect, there's no denying that the iPhone's interface is very responsive. You only have to touch the screen lightly and something happens, which can't be said for all touchscreen phones. The 3G iPhone will possibly come out in the nest few weeks. Pricing has yet to be announced.

Update: The iPhone 3G has been launched, and UK prices and details are now available. Read our full Apple iPhone 3G preview here.