Chinese-bought Samsung Galaxy S2 has a very limited language list Possible Duplicate:
  Can I install additional languages on Android?  




I bought a Samsung Galaxy S2 in China and have used it in English but now I bought the new S3 and want to sell my S2.  Since I live in Norway I need to be able to change the language to Norwegian, but it only has some Asian languages (four of them) and English UK, English US.  Is it possible to add the languages that are missing?
You would have to change to another (Android) ROM that has other languages. Take a look at How to Install Stock ROM on Samsung Galaxy S3 (S III GT-I9300).

You can download Nordic firmware at SamFirmware. (Nordic firmware's not in the related links in the link above, but you can follow the first link for the steps in installing/flashing a new ROM)