This specific plan is valid only within Hungary (and the EU). This is the most important question for "Euro-trip" travelers. If you take a train from Budapest to Belgrade (Serbia) or Ukraine, your connection will stop at the border as they are not in the EU. For this multi-country trip, we highly recommend our Europe Regional eSIM, which covers both EU and non-EU Balkan countries.
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Is this eSIM valid for neighboring non-EU countries like Serbia or Ukraine?
Updated April 22, 2026
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