I have read everything I can find and have forum searched and Google searched and can not find an answer for this simple (for me) question. The question shows my complete lack of understanding of exactly how connections are made. If I buy a 3G capable IPad and do not initially sign up for the AT&T service, can I do so while riding in a car down the highway? IE while evacuating for a hurricane? In other words does the signup require that you be connected via WIFI when you try to get the AT&T service or can it initially be done via cellular directly to AT&T?