Samsung Galaxy Note 4 SM-N910F 4G LTE 32GB Black Unlocked International Model GSM (2G) 850 MHz, 900 MHz, 1.800 MHz, 1.900 MHz UMTS (3G) 2100 MHz, 1900 MHz, 850 MHz, 900 MHz 4G FDD LTE B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B17(700), B20(800) Unlocked international version 32GB Memory 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.