The only iPhones that support Dual SIM are the XS, XS Max and XR. One is a physical SIM card in the SIM Card tray and the other is an eSIM built into the phone that can be activated by a carrier that supports eSIM.
The only iPhones that support Dual SIM are the XS, XS Max and XR. One is a physical SIM card in the SIM Card tray and the other is an eSIM built into the phone that can be activated by a carrier that supports eSIM.