BLU Samba JR Q52 Unlocked Quad-Band Phone with 1.3MP Camera and QWERTY Keypad (Red) This unlocked cell phone is compatible with GSM carriers like AT&amp;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 Quad-Band GSM cell phone compatible with 850/900/1800/1900 mHz frequencies plus GPRS/WAP data capabilities. 1.3MP Camera; QWERTY Keyboard; Stereo FM radio; MP3 player; MP3 ringtones and MicroSD slot upgradeable up to 8GB. Games; Browser WAP 2.0/xHTML; SMS; MMS; Organizer; GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps; Internal Memory 64 MB + 32 MB and MicroUSB v2.0. 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.