There are GSM networks in the rest of the world yes, but that is not the only technology outside the US. There are CDMA networks in other countries as well. S

There are GSM networks in the rest of the world yes, but that is not the only technology outside the US. There are CDMA networks in other countries as well. See: http://en.wikipedia.org/wiki/Cellular_frequencies#Other_Regions http://en.wikipedia.org/wiki/Cellular_frequencies#Other_Regi...