the iPhone XS and iPhone XR only have room for a single SIM inside. The second SIM is a virtual SIM or eSIM, which can be configured in the phone’s settings. But eSIM functionality requires ...

And it’s fixed now. One new feature of the iPhone XS, XS Max, and XR is that each device offers dual SIM support. In addition to the built-in physical SIM, as of iOS 12.1 you can add a second line to ...