Originally Posted by
xD4rk I don't have a mobile data plan. We're waiting for my parents' contract to be up until we get a family plan. Anyways, mobile data keeps turning itself on for some reason and then AT&T keeps charging us $40 each month. And it's really annoying, as we're not rich (we got this phone off a family friend). Is there a way I could disable/keep it from being turned on any under circumstance unless I (the user) turn it on myself?
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Try turning Airplane Mode on. That should kill all power to the radios. And unless AT&T didn't do anything stupid to the ROM, it should stay that way.