How do I apply my discount

[MauS]

I have recently upgraded to Apple iPhone 15. I am trying to apply my discount as I work for nhs. I have signed into o2.co.uk/open. It is not clear how to apply my discount. I have previously had nhs discount. I have the code from the salesman in the shop but don’t know where to put i

[Cleoriff]

@MauS 

This is what you need

Guide: O2 Open & Friends and Family discounts - How to sign up 

The code for the NHS is NHS01