Lost or stolen advice here but call customer service and they will send you a new sim.
Make sure they cancel the old one though
https://community.o2.co.uk/t5/Pay-Monthly-and-Pay-Go/Lost-or-Stolen-O2-Device-How-to-Report-it/m-p/1...
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.Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
>>>>>>>>>>>>>>>>