Lenovo K900 5.5 Inch Unlocked Android Smartphone - (1920 x 1080 FHD 400+PPI) 4GB/1GB Intel Atom Z2580 2.0GHz Retina AH-IPS Screen GPS Dual Camera 13.0MP F1.8 Large Aperture 2.0MP Flash Light Stainless Steel-Orange (Rooted + Google Play) Dual Cameras, front camera 2.0MP (88 wide angle); back camera 13.0MP (Exmor RS Stacked CMOS,F1.8 large aperture, with dual flashlights) AH-IPS screen, Corning 2 Gorilla Glass, 1920 x 1080 pixels FHD screen, 400+ PPI, 16000K Colors Stainless steel, unibody mold Intel Atom Z2580, 2.0GHz Dual Core, as powerful as strongest Quad Core. 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.