Hello smyth6150,
Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you have questions about erasing an eSIM. You can remove an eSim if you choose to, but to reinstall it, you would need to contact your wireless carrier: How to erase the eSIM on your iPhone - Apple Support
"Learn how to erase your eSIM, if you need to.
You might need to erase your eSIM if:
- You transferred the eSIM's phone number to another iPhone
- You're going to sell, trade in, or give away your device
Don't erase your eSIM as a troubleshooting step unless directed to by your carrier.
If you erase your eSIM, you'll need to contact your carrier to get a new one. Then set up your new eSIM.
To erase your eSIM:
- Go to Settings.
- Tap either Cellular or Mobile Data.
- Tap the plan that you want to erase.
- Tap Delete eSIM.
If you erase all content and settings from your iPhone, you can choose to erase your eSIM as well or keep it.
If you want to cancel your cellular plan, you still need to contact your carrier to cancel the plan."
We hope this helps.
Cheers!