@Salah11
You need to use your old sim in the new phone.
If you want to use the new sim, for 5g for example, you need to do a sim swap 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.
