BLU Zoey 2.4 T278 Unlocked GSM Dual-SIM Cell Phone - White/Lime GSM 850 / 900 / 1800 / 1900 (SIM 1 & SIM 2) 2.4" TFT Screen OS: Propietary, FM Radio, MP3 and MP4 VGA Camera (640 x 480 pixels) w/ LED Flash + Video Internal Memory: 32 MB + microSD Slot Expandable up to 32GB 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.