BLU Dash Music 4.0 D272a Unlocked Dual SIM Phone (Black) Unlocked Dual SIM 4.0-Inch High Resolution WVGA Display, Dual Core 1.3 GHz Processor Dual Stereo Surround Speaker; 4 GB ROM, 512 MB RAM + microSD up to 64 GB 3.2MP Camera with Geo-tagging and touch focus; HTML5 Browser Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot; Bluetooth v4.0; 1500 mAh Battery Android 4.2 Jelly Bean, 4G HSPA+21Mbps 850/1900: Nationwide AT&T: Cricket Wireless, Tracfone, 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 Amrica, Walmart Family Mobile supported in most areas; check with your service provider. 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.