Times to get internet data and picture messages (mms) you have to set up apn settings that are specific to your carrier. You do not need to set up any settings for original carrier, everything will work out of the box.
If specific carrier is selected it is only guaranteed to work with that specific carrier. The item "New Other Samsung Galaxy S9+ Plus G965U GSM Unlocked AT&T Verizon T-Mobile" is in sale since Thursday, May 16, 2019. 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, China, 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, Costa rica, 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.