iPhone 4 announced at last

Steve Jobs has at long last given a public reveal to what is being called simply the iPhone 4.

The device – the same as that obtained by Gizmodo – is just 9.6mm thin. It has a flat rear and metal edge which acts as an antenna.

It packs one front-facing camera, a 5MP rear-facing camera with LED flash and a 3.5 inch 960×640 resolution screen. Though not OLED as many were expecting, the screen does boast a pixel density of 326ppi – a market leading figure that Jobs says goes beyond that which can be perceived with the human eye.

HD 720p video recording at 30fps comes as standard. "Face-time" video calling will also be featured, though in a telcom-provider-pleasing move it is limited to wi-fi only.

The iPhone 4’s OS has been renamed iOS and will offer users the chance to use Microsoft’s Bing search engine via a pop-up option menu. Google remains as the default search option, though.

Battery life is said to have been improved by an impressive 40 per cent over older models, thanks in part to the Apple A4 chip (of iPad fame) that powers the device. Browsing time over 3G is pegged at 6 hours with a wi-fi browsing time of ten hours.

iPhone 4 will also use Micro SIM cards, meaning users won’t be able to use existing chips if they buy a handset out of contract.

Other features include a gyroscope, accelerometer and compass, the combined effect of which is six-axis motion control for games.