Best answer by Mohammed
Welcome to the iD Community.
It's not possible to convert from PAYM > PAYG.
You can look at changing to the cheapest tariff available in your plan change options in the iD app/account if you're on a SIM-only plan. This way you'll keep your number running at minimum cost.
Otherwise, you'll need to cancel and re-order in the future.
We provide inclusive roaming in up to 50 destinations.
Check our our available destinations as you may be able to use your phone abroad.