Hi ​@Vckferg ,

 I’m really sorry to hear that you’re unable to make calls after transferring your eSIM from O2 to iD Mobile, I completely understand how frustrating this must be.

Here are a few quick checks that might help:
-Make sure your eSIM is fully activated in your iPhone settings.
-Go to Settings > Mobile Data > Network Selection and try toggling Automatic off, then select iD Mobile manually if it appears.
-Restart your device after these steps.

If the issue persists, please include your device details and any error messages when you contact us so we can escalate this to our tech team quickly.
get in touch via our Socials (Facebook or Instagram), Live Chat, Community or you can email us at socialqueries@idmobile.co.uk and outline the details of your query, we would love the opportunity to put things right. 

Lamiya

It's a i phone pro 12 max. I've tried everything suggested but ID mobile not shown on the list.  Very disappointed by the change and not being able to speak to someone to get this resolved.