You do not need to set up any settings for original carrier, everything will work out of the box. To get apn settings for your carrier please contact your carrier or search online.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 "Samsung Galaxy S10 G973U GSM Unlocked T-Mobile AT&T Verizon SmartPhone Android" is in sale since Thursday, May 7, 2020. 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, Spain, 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, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Oman, Pakistan, Paraguay, Reunion, Uruguay.