Nokia Lumia 1520 16GB Unlocked GSM 4G LTE Windows 8 Smartphone w/Carl Zeiss Optics 20MP Camera - Yellow (No Warranty) 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 900 / 1900 / 2100, 4G: LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800) 6" IPS LCD Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 2 Microsoft Windows Phone 8, Quad-Core 2.2 GHz Krait 400 Processor, Chipset: Qualcomm MSM8974 Snapdragon 8, Adreno 330 Graphics 20 Megapixel Camera (4992 x 3744 pixels) w/ Carl Zeiss optics, optical image stabilization, w/ Autofocus, Dual-LED Flash + Front-Facing 1.2 Megapixel Camera, stereo sound rec. Internal Memory: 16GB, 2GB RAM + microSD Slot Expandable up to 64GB Unlocked cell phones are compatible with GSM carriers such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint. This cell phone may not include a US warranty as some manufacturers do not honor warranties for international version phones. Please contact the seller for specific warranty information.