What to do with physical SIM after eSIM activation
You might not realize this, but your physical SIM card doesn’t automatically deactivate when you install and activate an eSIM. You can decide if you want to remove it or take advantage of your device’s dual SIM capabilities. If you choose to remove your device's physical SIM card, be sure to store it somewhere safe and secure.
If your phone supports more than one SIM simultaneously (dual SIM), you can leave your physical SIM card in and take advantage of multiple separate lines (e.g. one for home, one for travel). It can be convenient while travelling to have a SIM dedicated to calls and texts and an eSIM just for using local data.
On the fence? You can always reinsert your physical SIM later if you hang on to it.