@Jonnye
O2 don't write numbers to sim cards so you have to enter it manually into any apps that need your phone number.
If it's an iPhone it's in Settings >Phone >My Number.
For Android you need to enter number in the message app under RCS or chat settings.
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.
