I use it a lot in town, but it does not work reliably on slower mobile data networks in rural areas where the signal is marginal. It stops to buffer every minute or two, which is very annoying. I don't know how much data it uses, I have unlimited and don't watch it. I will say that Pandora seems to work better than any other streaming radio options I've tried out. All of them eat the cellphone battery, though, so you need to keep the phone plugged in to the charger.