BLU Q110 Samba Q - Unlocked Phone - US Warranty - Retail Packaging - Black/Violet This Unlocked Dual SIM 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. Unlocked Dual SIM Quad-Band GSM cell phone compatible with 850 / 900 / 1800 / 1900 MHz frequencies for both SIM Slots plus GPRS/WAP data capabilities. VGA Camera; QWERTY Keyboard; Social Networking Integration; Stereo FM radio; MP3 player; MP3 ringtones and Micro SD slot upgradeable up to 4GB. Games; Browser WAP 2.0/xHTML (Opera Mini); SMS; MMS; Organizer; GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps; Internal Memory 64 MB + 32 MB and MicroUSB v2.0. Talk time up to 8hrs - Stand-by up to 600hrs.