I turned it off, what will happen?
--------you default to 2G (EDGE) service
Does that mean that if I accidentally get on safari, it can't charge me since I turned it off?
--------umm.. no... see #1 answer
Also, when I'm in the car, the 3G sign shows up in the top left. Does that mean I'm using parts of my 200 mb of data?!
--------YES!!!!!!! Only wifi is real, like a laptop! 1G or 2G or 3G or 4G... your using your carrier's 200MB plan, which, for an iphone
, will last 1 day, nahhhh, maybe 12 hours...