How are International ROMs made?
I have downloaded and installed a little while ago a ROM which is the best I've ever used in terms of speed, smoothness, battery life, and customization and features. However, I am unable to make calls, send SMS and MMS and use the Internet (Mobile Data) due to the fact that I am in Australia and the ROM is not an International ROM.
I am a developer. However my experience in this regard is limited. How would I go about making this ROM support Australian networks? If you know anything at all I would appreciate your help on this. Even if its something as little as a keyword to search for because I have been searching for a long time and have not found a single result that was related.