New CEO Tim Cook took the stage in October 2011, to reveal the speedier iPhone 4S. While it proved extremely popular, this mobile was criticised for looking very similar to the iPhone 4. The 4S introduced Apple's Siri voice-controlled assistant.
Has Apple lost its edge?
December 16, 2013 7:00 AM PST
Photo by: Kevork Djansezian/Getty Images
| Caption by: Luke Westaway
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