No, it doesn't - your home provider ought to publish a list of providers with whom they have roaming agreements. For example, here's Three Ireland's page for Ge

No, it doesn't - your home provider ought to publish a list of providers with whom they have roaming agreements. For example, here's Three Ireland's page for Germany: https://apps.three.ie/roaming/phone/prepay/Germany https://apps.three.ie/roaming/phone/prepay/Germany