HTC 8x c620E 16GB Unlocked GSM Smartphone - No Warranty - Black - GSM: 850/900/1800/1900 MHz; HSPA/WCDMA: 850/900/1900/2100 MHz This is a GSM phone and does NOT work with: Verizon, Sprint, or MetroPCS. 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.