So my family and I are driving from Dallas, TX to Iowa to visit my parents. The Dallas area is a big home area. However, we haven't left coverage at all in Oklahoma or Kansas (spending the night in KC). Now, we haven't had 3G coverage since leaving Texas, but we do still have data. I'm really glad too, 'cause looking at the web site it says we're in extended home area and may or may not have data. So, no 3G, but we are getting 1x. I'm impressed.