HTC One Mini 2 16GB 4G LTE Unlocked GSM Android Smartphone - Silver 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 900 / 1900 / 2100, 4G: LTE 800 / 900 / 1800 / 2600 4.5" Super LCD2 Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 3 Android v4.4.2 (KitKat), Quad-Core 1.2 GHz Cortex-A7 Processor, Chipset: Qualcomm Snapdragon 4, Adreno 305 Graphics 13 Megapixel Camera (4128 x 3096 pixels) w/ Autofocus, LED Flash+ Front-Facing 5 Megapixel Camera Internal Memory: 16GB, 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.