Brand new Iphone15 phone, sim not supported.

[James67]

New phone and plastic sim purchased on contract. Sim inserted and comes up sim not supported. Help.

[Enlli]

SIM not supported is strange.

Have you got another SIM to try in the phone 

We are just customers here

You will need to contact O2.

Message them on Social Media. Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) 

Or phone them on 202 or 0344 809 0202 (contract) 

4445 or 0344 8090222 (PAYG)

[Oxonian]

@James67 

It might e worth trying the SIM in another 'phone in case it is a SIM issue. 

Has the SIM been activated ? 

[Oxonian]

Did you sort this out @James67 ?