Most unlikely it was factory unlocked then to start with. If you followed the correct unlock procedure it shouldn't relock as the IMEI will now be registered as an unlocked phone. What have you done recently to the phone?
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.
