BLU Sport 4.5 IP55 Certified Water/Dust Resistant Android 4.4 KK 4G HSPA+ 5MP Camera Unlocked Cell Phone - Retail Packaging - Green Unlocked phone; 4.5" IPS Display: 5MP Autofocus Camera and VGA Front Camera. MediaTek processor, 4GB memory with 512MB RAM, with Micro SD up to 32 GB 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. 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, Pure Talk USA