@James1234
You can either use your old sim in the new phone or to use the new sim, you need to start a sim swap from your old sim Guide: Sim Swap: a mini guide 2017 update
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.
