I'm looking into getting a refurbed iPhone 3G, but it says the $30/month data plan is required. Why is this required? I'm not really interested in using the apps and internet, but more of the call features, texting, and playing music.
Can anyone tell me why it's required?
Can anyone tell me why it's required?

Someone could easily get themselves into trouble without a data plan.
), my bill is actually high enough that, even though I just got the 3GS on launch day last summer at the subsidized price (which means that I signed a new 2-year contract), I'm still eligible to get whatever the new iPhone will be this summer, also at the subsidized price. Yes, I know I'm not getting anything for cheap or free or whatever, but it's nice not to have to kick out $700 up front for a new device.