But Singtel eSIM FAQ seems to be quite confusing. #3 seems to say it is free and can reuse the eSIM installation email. #7 seems to say eSIM can only be installed once.
Strange. Guess I am missing something here...
https://www.singtel.com/personal/support/mobile-postpaid/esim
3. How do I transfer my eSIM to another device?
1). Delete eSIM from your current device.
On iOS, go to Settings > Mobile Data. Tap on Delete eSIM.
2). On your new device, open your eSIM installation email and tap Install eSIM.
3). Follow the steps from there or find out how in our set up eSIM guide.
7. How can I remove an eSIM from my device?
In your device settings, go to the Mobile Service/SIM Manager page. Select the eSIM you want to remove from the SIM profiles listed.
Important to note: Your eSIM can only be installed once. If it is removed by accident, a replacement eSIM will cost $10.90.