International Version. Manufacturer’s warranty may not be available for US buyers. This is an unlocked international mobile phone and it may be used with any GSM network in the world that uses a frequency or band that this device supports. This phone/tablet will NOT work with Verizon, Sprint, Boost, or any other CDMA network. Wireless frequencies for 3G, 4G, and LTE vary by network. Even when 3G/4G/LTE frequencies are supported, a new SIM card or additional configuration may be required, and coverage may vary by location. Please check with your carrier if you have any questions regarding compatibility.