Siri—the iPhone 4S’ smart assistant—connects to Apple’s servers every time you ask for something or dictate a message. It sends your query and analyzes it, returning you whatever it thinks is the correct answer or action.This details are collecting from Internet
This means that, depending on how much you use it, it may affect your data plan. So if you don’t have a unlimited data plan,Siri will give you a big surprise when you get monthly bill
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