@JohnRei_2491866 Sorry, but we don't really know what help you need from this short message.
Start with one of the first two FAQ article here: https://community.smarty.co.uk/t5/faq/tkb-p/questions
This should also be useful: https://help.smarty.co.uk/en/articles/2090500-roaming-and-international
There's plenty on the smarty website with a quick search.
