on 22-04-2020 02:24
on 22-04-2020 02:36
on 22-04-2020 02:36
on 22-04-2020 07:25
on 22-04-2020 07:25
I think any discount has to be applied within 28 days of taking out a contract but as @Bambino says, you could contact customer services and ask.
Guide: O2 Open & Friends and Family discounts - How to sign up
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