Samsung Galaxy Music DUOS S6012 4Gb Blue WiFi Android GSM Dual SIM Cell Phone This unlocked cell phone is compatible with GSM carriers like AT&T and T-Mobile. Not all carrier features may be supported. It will not work with CDMA carriers like Verizon Wireless, Alltel and Sprint. Android OS, v4.0.4 (Ice Cream Sandwich); TFT capacitive touchscreen; Dual SIM Wi-Fi 802.11 b/g/n, Wi-Fi Direct, DLNA, Wi-Fi hotspot; Bluetooth v3.0 with A2DP 3.15MP (2048 x 1536 pixels) w/ Geo-tagging and touch focus; HTML5 Browser Stereo FM radio with RDS; built-in antenna - SRS sound enhancement; 4 GB, 512 MB RAM + microSD up to 32 GB