Nokia Lumia 1520 GSM Unlocked RM-937 4G LTE 16GB Windows 8 Smarphone - Black - International Version No Warranty 2G: GSM 850 / 900 / 1800 / 1900 3G: WCDMA 850 / 900 / 1900 / 2100 - 4G: LTE Band 1 (2100 MHz), Band 20 (800MHz), Band 3 (1800 MHz), Band 7 (2600 MHz), Band 8 (900MHz) Display: 1080 x 1920 pixels, 6.0 inches (~367 ppi pixel density) Internal Memory: 16 GB, 2 GB RAM Camera: 20 MP, Carl Zeiss optics, optical image stabilization, autofocus, dual-LED flash CPU: Quad-core 2.2 GHz Krait 400 GPU: Adreno 330 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.