HTC One M7 Unlocked Cellphone, 32GB, Silver 4G LTE 700/850/1700/1900/2100 MHz Quad-Band 3G HSDPA 850/900/1900/2100 MHz Quad-core 1.7 GHz Krait 300, Adreno 320 GPU 4.7 inches HD Screen, 1080 x 1920 pixels with Glass Protection Dual HD Cameras, 4MP Rare and 2.1 MP Front with LED 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.