Unnecto Air 5.5 Smartphone - Unlocked (Gray) Unlocked Dual SIM Phone, Quad Core 1.3 GHz Processor, 13MP Main Camera 5.0 Front camera 5.5 HD IPS LCD Capacitive Touch screen 3.5 mm Audio Jack, FM Radio, MP3 Player, MP4 Player Micro SD Slot up to 32GB Android 4.4.2 Kit Kat 4G HSPA + 21Mbps HSDPA 850 / 1900 / 2100 Nationwide AT&T: Cricket Wireless, Trachoma, Straight Talk, Net10, H20 Wireless, 420 Wireless, Black Wireless, Consumer Cellular, Pure Taluks, Red Pocket, Telco America. T-Mobile: Metrics, Lycia, Speed talk, Go Smart, Simple Mobile, Net10, Straight Talk, Slave, Ultra Mobile, Telco America, Walmart Family Mobile. Pure Talk 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.