If it says specific carrier then it can only be activated with those carriers. Do not assume that it will work with your carrier unless stated. The item "Unlocked Samsung Galaxy S8 G950U G950U1 Black AT&T TMobile Cricket GSM Used" is in sale since Thursday, September 13, 2018. This item is in the category "Cell Phones & Accessories\Cell Phones & Smartphones".
The seller is "mobileitems" and is located in Deerfield, Illinois. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Taiwan, South africa, Belgium, France, Ireland, Netherlands, Poland, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bermuda, Brunei darussalam, Bolivia, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Oman, Pakistan, Paraguay, Reunion, Uruguay, Spain.