LG G3 D855 16GB Metallic Black Factory Unlocked 4G 3G 2G 2G GSM 850/900/1800/1900 LG G3 D855 16GB Metallic Black Factory Unlocked 4G 3G 2G 2G GSM 850/900/1800/1900 & 850(B5)/ 900(B8)/ 1900(B2)/ 2100(B1) & LTE 800(B20)/ 1800(B3)/ 2600(B7) - No 4G in USA - International Version 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.