When I return home, I'm looking into the WalMart exclusive T-Mobile deal of $30/month pre-paid for 100 minutes, and unlimited data and text. I think it's 5GB of either 3G or 4G (can't remember) and then you're throttled down to 2G speeds. I don't know how much data is used by audio streaming. You can find it in some WalMart stores and choose an android phone, or supply your own phone and buy a SIM card from the T-Mobile website. Obviously it depends on their coverage in your area. I had a grandfathered plan of $20/month for 60 minutes, so adding $10/month for more minutes (I don't talk that much) and unlimited data is perfect for me, while still being as cheap as possible.