I own a 3G iPhone which is amazing! I keep it in pristine conditions and don't like taking it places where I know it might get messed up i.e beach or snow. Now a lady friend of mine had the iPhone 2G and I told her I would buy it off of her but she insisted I just have it because she has no use for it. It is a little beating up but I really don't care. So here is my question...How(If I can) can I unlock the 2G iPhone so i can just swap out my 3G sim card into both phones but still use my 3g plan and not have to use the 20$ data plan. Is this even possible? I ask because i have taken out my sim from my 3g and used it in a old LG phone but when i put that same sim in the 2g iphone, it wants me to activate it?? Any help would be great!!!