I currently have the first generation iPhone which I am using AT&T's GoPhone Pick Your Plan. I have the Unlimited Internet Access and Visual Voice mail just as it is supposed to have. When I activated my iPhone after purchase I chose the GoPhone plan and have had it ever since. Now I really am contemplating purchasing the iPhone 3G but was wondering if I would be able to simply install my SIM from my current iPhone to the 3G with no issues. If not, will I be able to activate the new 3G with GoPhone pick your plan and just transfer my current number? Thanks..