I would start by trying the SIM card in a different phone and seeing if the same "No Sim" error comes up, if it does then pop into an o2 store with Photo ID to get a new sim, or contact o2 Guide: How to find help & contact O2
This is not customer services and we dont have access to your account I do not work for o2 or any VMo2 /Telefonica/Liberty Global Company
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.
