My dad got the iPhone 4S recently and he told me sometimes when he's driving and he asks Siri to call "xxxxx" it says it can't connect to the network. The problem I have with that is I don't see why Siri should require the network for internal phone functions. If that is truly the case I think that sucks. As most are well aware, on the iPhone 4 (which I have) you can voice command dial and obviously there is no network so I thought Siri would work the same way. I thought anything internal such as making phone calls, writing or reading text messages, etc would work regardless of a network and a network would only be needed for such things as directions, finding locations, checking weather, etc. Anyone else experience this and what's your feeling on it?