Sony Xperia Z White C6603 (Factory Unlocked) International Version LTE 5" Full Hd ,13 Mp, Dust & Water Resistant Sony Xperia Z White C6603 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.