Blu Studio C Mini Quad Core, 4.7" IPS, Android 4.4 KK, 4G HSPA+, 5MP Camera - Unlocked Cell Phones - Orange Unlocked Dual SIM Phone; 4.7" WVGA Display (480X800): 5MP Autofocus Camera with LED Flash, and VGA front camera, HD Video HD recording (1080p) 4GB Internal memory with 512 MB RAM with Micro SD Slot up to 32GB 4G HSPA+ up to 21Mbps 850/1700/1900: Nationwide AT&T: Cricket Wireless, Straight Talk, Net10, H20 Wireless, 420 Wireless, Black Wireless, Consumer Cellular, Pure TalkUSA, Red Pocket, Telcel America. T-Mobile: MetroPCS, Lyca, Speedtalk, Go Smart, Simple Mobile, Net10, Straight Talk, Solavei, Ultra Mobile, Telcel America, Walmart Family Mobile. 1.3GHz Quad-core, Android 4.4 Kit Kat 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.