You don’t need to delete the eSIM from your phone. It will save you time for future use, buying new data packages directly in the KnowRoaming app without having to set up the eSIM profile again. If you still would like to erase your eSIM, follow these steps:
Go to Settings > Cellular.
Tap the eSIM label you want to erase.
Tap Remove Cellular Plan.
Tap the label, it may ask you to sync contacts, select your Primary line and the eSIM label will be erased