An iPad can only have a single SIM or eSIM active, but you can use the Dual SIM feature starting with those iPhone models ...

In September, Apple for the first time introduced iPhone support for dual ... SIM inside the new iPhones. The eSIM functionality will not be available until Apple releases an update to iOS 12 ...

We're covering all devices in the iPhone 12 range on this page but it's generally only the standard model that's still available at most retailers. The Pro models and the mini are all long ...