BLU Studio 5.0 C HD Quad Core - Unlocked Cell Phone - (Blue) Unlocked Dual SIM Phone 5.0inch HD Display (720x1280): 8MP Autofocus Camera with LED Flash, and 2MP front camera, HD Video HD recording (1080p) 1.3GHz Quad-core, Android 4.4 Kit Kat 4GB Internal memory with 1GB RAM with Micro SD Slot up to 32GB 4G HSPA+ up to 21Mbps 850/1700/1900: Nationwide Coverage on the Following Carriers: 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. 4 GB Storage Capacity (Estimated Free Space 2.25 GB)