What Frequencies (MHz) Bands are used around the world?
GSM-850 and GSM-1900 are used in the United States of America, Canada, and some other countries in the greater Americas. GSM-850 is also often known as GSM-800. GSM-900 and GSM-1800 are used in other parts of the world with the exception of Japan and Korea. W-CDMA/3G is used for Japan and CDMA is used for South Korea.