@Th6
I guess you don't have an active sim.
You can use Skype to call O2
Guide: A Guide to Skype
Guide: How to find help & contact O2
Or go in store with photo ID to get connected.
Use a plastic sim if possible as esims are causing customers many issues.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.
