Apple have today announced the iPhone 4S, the latest incarnation of the iPhone, which will be launched on 14th October 2011.

Whilst some people were surprised that this new iPhone was not radically different in looks from the iPhone 4 or was not called the iPhone 5 it is clear that this is a completely redesigned phone utilising the iPhone 4’s existing exterior.

So other than it looks the same as the iPhone 4, what defines the iPhone 4S?