Changing my settings on iPhone 7 to use abroad

Hi Bernade_1946175  - here is an article that explains what you need to do - https://help.smarty.co.uk/en/articles/2045681-setting-up-your-ios-device-to-work-abroad

Can you try that first and then let us (or Support Team via web chat) know if it doesn't work and what specifically is the problem.