Microsoft Lumia 640 XL LTE Dual Sim Blue 8GB (RM-1096) Unlocked international model- no warranty RM-1096. New, DUAL SIM, Unlocked, International GSM model. Will work with GSM networks like AT&T and T-mobile. Will not work with CDMA networks like Verizon or Sprint. 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. Please check if your GSM cellular carrier supports the bands for this model before purchasing, LTE may not be available in the US as this is the international model. The box contains: Your new device, USB cable, Charger (may be foreign) If so, an US adapter will be included, Documentation. Supported frequency bands: 3G WCDMA: 1,2,4,5,8 4G LTE: 1,2,3,4,5,7,8,12,17,20,28,30,40,41 Supported frequency bands: 3G WCDMA: 1,2,4,5,8 4G LTE: 1,2,3,4,5,7,8,12,17,20,28,30,40,41