At least for a smartphone user (especially the iPhone). On the road: Smartphone with the big screen by itself Laptop running a tether (tether works on my iPhone) At home: Internet connection, with unlimited bandwidth, with wifi router. So the above scenarios are most people IMO. Basically you're left with: Mifi at home for those who don't have (or don't want which is probably more likely) internet at home and then mifi on the road. But if you don't get service at home then its probable that you won't get cell service either at that location. I'm curious how you see mifi coming into play. The plans and pricing are not very encouraging if trying to replace a wired setup at home.