Any chance of trying the SIM in another phone?
Guide: How can I sort out my network issues?
Guide: Is the network down for me or everyone?
You may need a replacement SIM. Best to call into an O2 shop with Photo ID
Or 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)
This is not O2 and we are all customers here similar to yourself and cannot answer account type queries.
