I’ve been really pleased with Sprint’s international service. It didn’t cost me anything to add international data roaming to my plan. As soon as I turn my phone on after landing, I get three text messages explaining the access I have in the country I landed in. Data is free. Usually 20 cents a minute for phone calls. They advertise 2G or 3G speeds on the data but I’ve found it to be faster in most places. Better than hotel WiFi in Germany.