Samsung Galaxy S3 i9300 16GB - Factory Unlocked International Version Blue- NO WARRANTY 2G Network GSM 850 / 900 / 1800 / 1900 3G Network HSDPA 850 / 900 / 1900 / 2100 4G Network Region Based Dimensions 136.6 x 70.6 x 8.6mm 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.