it is not under Settings/general and my update is iOS 6.1.3. Language is set at english, Region is set at United States (I'm also in the U.S.). any help?
Are you certain you have a 4S as opposed to the iPhone 4? Please post the model number from Settings - General - About - Model = ???
Verify you have an iPhone 4S with this Model Identifier Utility.
It says MD146LL/A
That is an 8gB iPhone 4. Siri is not available on the iPhone 4.
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