Disclaimer: Original Carrier is AT&T but the Phone is unlocked to work with GSM Carrier. GSM Unlocked cell phone is compatible with carriers like AT&T, T-Mobile, H20, Simple Mobile, Consumer Cellular, Metro PCS, Cricket, Straight Talk GSM, Tracfone GSM, Ting GSM, Project Fi GSM and other prepaid carriers. The unlocked cell phone will NOT work with CDMA Carriers like Verizon, Sprint, Boost Mobile, Virgin mobile, Straight Talk CDMA, Tracfone CDMA, Total Wireless, Ting Wireless CDMA, Project Fi CDMA or U.S Cellular. CDMA carrier requires you to purchase their carrier branded phones only. Even if the listing says Unlocked it will not work with CDMA Carriers. Please contact your service provider to check fully compatibility of the phone & the network they operate on.