@hugo0000
You need to get a PAYG sim then request a number migration.
https://www.o2.co.uk/shop/sim-cards/pay-as-you-go
Guide: Migration & porting into O2
There will be fees to pay if your contract has not reached it's minimum term.
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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