Pantech Breeze 3 Basic Flip Phone GSM Unlocked Operating Frequency GSM850Mhz, GSM900Mhz, DCS 1800Mhz, andPCS1900Mhz networksin North America, South America, Europe, Africa, and Asia-Pacific where these networks are supported Pantech Breeze III P2030 Grey Retail Packaging Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers) Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin