I think you are right about that. Roaming traditionally refers to using your phone outside of its network country. So calls to that phone will still be charged

I think you are right about that. Roaming traditionally refers to using your phone outside of its network country. So calls to that phone will still be charged an international call charge. Then again, if you have a data plan, coupled with some kind of VOIP service, you could effectively use your phone across all of Europe for the simple price of an unlimited data package.