Unlocked Lenovo A850+ 5.5inch QHD IPS MTK6592 Octa core Android 4.2 Smart Phone 1GB RAM 4GB ROM 3G GPS Dual SIM (white) 5.5inch QHD IPS Screen 960x540 pixels,Front 0.3 MP+back 5.0 MP Camera. Unlock GSM 900/1800/1900 Mhz,WCDMA 900/2100 Mhz MTK6592 Octa Core Android 4.2 RAM 1GB ROM 4GB. Detected over all products before shipping. 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.GGSM 900/1800/1900MHz