OnePlus One A0001 4G LTE 3GB-RAM 64GB-ROM 5.5 Inch International Version - No Warranty - Sandstone Black Global Version Band FDD-LTE: 1(2100), 3(1800), 4(1700/2100), 7(2600), 17(700), 38(2600), 40(2300),TD-LTE:2570-2620 / 1880-1920 / 2300-2400MHz.Band (WCDMA): 2100 / 1900 / 850 / 900MHz; Band (GSM): 850/900/1800/1900MHz 3GB RAM 64GB ROM,Quacomm MSM8974AC Quad Core 2.5GHz. 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 informations.