Unnecto Neo - Factory Unlocked Phone - Retail Packaging (Gray) Unlocked Dual SIM Phone, Quad Core 1.2 GHz Processor, 8MP Main Camera, 3 MP Front camera 5.0" WVGA 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 GSM 850/900/1800/1900 HSDPA 850 / 1900 Nationwide AT&T: Cricket Wireless, Tracfone, Straight Talk, Net 10, H20 Wireless, 420 Wireless, Black Wireless, Consumer Cellular 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.