One compelling feature of the iPhone 4S is Siri, the new voice control assistant that has taken iOS by storm. The technology powering Siri was acquired by Apple in early 2010 and lets users interact with their phone using voice control and natural language commands.
According to analysts, customers are so interested in Siri. So much so that they are passing on the $99 iPhone 4, which does not offer Siri, and upgrading to the $199 iPhone 4S just to get the voice assistant. Sterne Agee analyst Shaw Wu says, "Talking to industry sources, what's driving the 4S is better than expected reception of its new Siri software." Wu is s
