My attempt to find an answer to this via Google has failed hence asking the almighty STW collective.
I use voice activation on my iPhone to call people hands-free. It's particularly handy in the car since I can do it directly from my Bluetooth headset without touching the phone.
I recently moved from my iPhone 4 to a 5, which of course has Siri. I quite like Siri, but it appears to need an internet connection, even if all I want to do is call someone from my contacts. This works using non-Siri voice activation, but not using Siri. This is a pain if I'm trying to let the missus know when I'll be back but I've got no internet connection.
The question is, can I keep Siri turned on but still have access to non-internet reliant voice activation?