GSM 850 / 900 / 1800 / 1900, 3G Network: HSDPA 850 / 900 / 1900 / 2100.;5.7-inch Super AMOLED Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 3 Android v4.3 Jelly Bean (upgradable).;13 Megapixel Camera (4128 x 3096 pixels) + Front-Facing 2 Megapixel Camera.;Internal Memory: 32GB storage, 3GB RAM + microSD Slot Expandable up to 64GB.;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.