I've just set my International Roaming on my PAYG mobile account to 'on', but I am already in the USA. My phone currently shows 'no service' will I be able to make or receive calls whilst I am here?
Welcome to the community and thanks for posting. I'm deeply sorry you've got no service on your mobile in the USA.
I'm pleased to hear you've already activated your international roaming. It'll take 2-24 hours for roaming to activate successfully. If you log back in to your account, do you see roaming as enabled?
When it's activated you'll be able to use your phone as normal. It may require a restart to find a network automatically or you could locate one manually.
You can also check costs of calls, texts and reception here.
I hope this information helps. Please let me know how it goes.