Transferring an eSIM
Here’s how to transfer an eSIM to a new iPhone
Delete the existing eSIM from the old device.
Install the BetterRoaming app on the new device and login using the registered email address, Apple ID or Google account.
Tap Reinstall your eSIM. The confirmation message appears "eSIM reinstalled Successfully".
Click Continue.
The home page is shown with the account details, active/expired plans etc.