In the US, all versions of the Apple iPhone 16 series support eSIM. They also all support dual-SIM, using two eSIM profiles at a time. However, there is no support for physical SIM cards in the US.
The eSIM is faster and more convenient than a physical SIM card. You can activate an eSIM digitally. You can switch between different providers without having to replace the SIM card physically. eSIM ...