As expected, the major carriers here in the United States have all indicated that eSIM support for this year’s iPhones is not here. Further, it won’t be until late this year. That support is necessary for the dual-SIM functionality of the iPhone XS, iPhone XS Max, and iPhone XR.
The ability to enabled dual-SIM support came yesterday to these iPhones thanks to the iOS 12.1 update. With the exception of China, the XS, XS Max, and XR models all use one physical SIM and a second eSIM. In China, because of local laws, a physical dual-SIM version is available.