The official Motorola specs. on this phone (Motorola Mobility, Inc. - Media Center - Fact Sheets - Motorola PHOTON? 4G Fact Sheet) indicate that it doesn't have the GSM1800 band. If that is not a typo, that's pretty unfortuate since that could significantly impact its usefulness for roaming overseas. It does have GSM1900 but in most instances, where there's GSM1900 coverage there's also CDMA coverage.