Thank you, but i spoke about NATIONAL roaming like cheap providers are doing it. I needed to tweak Virtuous 2.0.0 to work with national roaming without displaying the r and shut down the data connection. Because i'm running a mvno, it is very important for me that this is working...
National roaming is working (my provider uses networks of two other providers where no own infrastructure present) but it displays "R" when doing so. As for shutting down data connection you can turn that option off and still have internet when roaming (nationally or internationally) but have to be careful when leaving your country