@Monica_84
If this was an upgrade you need to use your old sim or do a sim swap to activate the new sim Guide: Sim Swap: a mini guide 2017 update
Otherwise, contact O2 or pop in store with photo ID.
Guide: How to find help & contact O2
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.
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