Turn off "internet connection" on 3G
I use a pre-paid plan on my iPhone 3G, and it's often that a friend click on something (or a app tries to connect) that requires a connection and takes most of the credit on my plan.
I only use the internet using the free wi-fi hotspots available in my area and not much often. So I turn it off to save battery, however when I turn if off it starts using GPRS using my paid credits.
So I would like to block the access, any idea?
Thank you all in advance.