You could acquire an iPhone that “fell from the truck” and only get voice service with it. Jailbreak and turn 3G data off entirely, only use data when you have WiFi.
PS – my next device will be Android. At least the user can actually decide which apps to install without playing the stupid jailbreak game, which gets old after a short while. iPhone is a great device, but still crippled by an ill old man’s vision of what it should and shouldn’t do.
