HTC Desire 610 8GB Unlocked GSM 4G LTE Quad-Core Android Smartphone 4.7 inch display front-facing speakers with BoomSound 8 MP auto focus rear camera with 1.6MP front facing camera Processor Speed: 1.2 GHz OS: Android 4.4 (KitKat) 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. Use a Nano SIM for this cellphone