As we explain in the hands on: iPhone 4S review, the changes under the hood for the new handset include a better processor, Siri assistant and a better lens.
However, many of the coolest new features are brought by the iOS 5 update, which will be coming to the iPhone 4 on 12 October.
That makes the iPhone 4 (and, to an extent, the similarly iOS 5 equipped-iPhone 3GS) attractive propositions for the more thrifty customers.
The iPhone 4 8GB version is available on major networks for no additional cost on two year contracts starting from £36 a month (Orange) and £35.74 (T-Mobile).
Buying the phone without a contract will now set you back £429, and will now ship on October 14 with iOS 5 built in.
Although Apple’s shares dropped significantly as the iPhone 4S was announced, it is still likely to sell like hot-cakes, and, as eBay predicted, the chances are that the iPhone will have a surge as well.