please check gsx info

This iphone is at&t? Or what carrier is it?

Serial Number C7JQJ3F6GRXV Initial Activation Policy ID 23 MEID Activation Policy Description US ATampT Puerto Rico and US Virgin Islands Activation Policy IMEI 353255075097033 Applied Activation Policy ID 23 Part Description iPhone 6s Applied Activation Policy Description US ATampT Puerto Rico and US Virgin Islands Activation Policy Product Version 10.2.1 Next Tether Policy ID 23 Last Restore Date Next Tether Activation Policy Description US ATampT Puerto Rico and US Virgin Islands Activation Policy Bluetooth MAC Address First Unbrick Date 171015 Last Unbrick Date Unbricked Unlocked false Unlock Date