LG Nexus 5 D820 16GB Unlocked GSM 4G LTE Quad-Core Android Smartphone w/ 5" True HD IPS+ Multi-Touchscreen -White 5" True HD IPS+ capacitive touchscreen, 16M colors 8MP (3264 x 2448 pixels) camera w/ autofocus, optical image stabilization, LED flash, Geo-tagging, touch focus, face detection, photo sphere, HDR, dual recording, and 1080p video recording Quad-core 2.3 GHz Krait 400 CPU featuring Qualcomm MSM8974 Snapdragon 800 processor Android OS, v4.4 (KitKat) Secondary 1.3MP front-facing camera 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.