ASUS Zenfone 6 16GB Dual SIM (Unlocked) A600CG 3G 6-inches Intel Z2580 2G RAM White - International Version No Warranty ASUS Zen UI Dual SIM 13MP Micro sim 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.