Hi, 2 things:
- Please post accordingly in the appropriate forum that matching the subject of yours. In this case, the Series 60 SmartPhones http://www.howardforums.com/forumdisplay.php?f=177 will do but not the Nokia wallpaper / theme.
- In US, the "band" for WCDMA/UMTS service is DIFFERENT from the rest of the world AND N80 ONLY operates the WCDMA/UMTS on 2100MHz. It's nothing to do with doing something in the firmware or "unlock the potential" because it lacks the actual hardware for WCDMA/UMTS on 850/1900MHz. Also, don't think that N80 is a "Quadband GSM + WiFi" will turns it into a "Multiband WCDMA/UMTS" capable phone too.