HTC Desire 610 8GB Unlocked GSM 4G LTE Quad-Core Android 4.4 Smartphone - Black (No Warranty) 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 1900 / 2100, 4G: LTE 850 / 1900 / 2100 (Bands 2, 4, 5 and 17) 4.7" Capacitive Multi-Touchscreen w/ HTC Sense UI 5.5 Android v4.4.2 (KitKat), Quad-Core 1.2 GHz Cortex-A7 Processor, Chipset: Qualcomm Snapdragon 4, Adreno 305 Graphics 8 Megapixel Camera (3264 x 2448 pixels) w/ Autofocus & LED Flash + Front-Facing 1.3 Megapixel Camera Internal Memory: 8GB, 1GB RAM + microSD Slot Expandable up to 128GB 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.