OnePlus One White 5.5 inch 4G FDD-LTE SmartPhone Android 4.4 IPS Capacitive Screen Phablet, Qualcomm Snapdragon 801(8974AC), Krait 400 Quad Core 2.5GHz RAM 3GB WCDMA GSM 5Mp+13.0MP Camera,1920 x 1080 Pixel Unlock OnePlus One White 5.5 inch 4G FDD-LTE SmartPhone Android 4.4 IPS Capacitive Screen Phablet, Qualcomm Snapdragon 801(8974AC), Krait 400 Quad Core 2.5GHz RAM 3GB WCDMA GSM 5Mp+13.0MP Camera,1920 x 1080 Pixel Unlock OnePlus One Operating System: CyanogenMod CM11(based on Android 4.4) CPU: Qualcomm Snapdragon 801(8974AC), Krait 400 Quad Core 2.5GHz; GPU: Adreno 330 Network type: LTE & WCDMA & GSM Network Additional Features: 1 4G, 3G, WIFI, , FM, Bluetooth, wallpapers, calendar, calculator, clock, tethering & portable hotspot, Play Store, OTG, NFC, WiFi Direct, Miracast, wireless display, Gesture & motion, LED notification, compass, etc Unlocked cell phones are compatible with GSM carriers but are not compatible with CDMA Carriers.