A close look at Apple's new iPhone 4S

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Apple has unveiled the latest version in its iPhone range, but there was no sign of the widely rumoured iPhone 5.

The iPhone 4S, as the new model will be known, boasts an improved camera and significantly extended battery life.

It will run on the latest iOS5 operating system, which is set for release on 12 October.

Rory Cellan-Jones takes a look at the new iPhone 4S.

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