Service provider normally sends 2G / 3G settings as a service message. I was able to access it from my Messages app on stock SGR rom. I am now on omnirom. I have received message from Vodafone that "save the settings you receive shortly". But either I have not received that at all OR I dont know where to look for it (its not under cell broadcast). Can you please help me to find that (or does this not work for custom roms).