This specific plan is valid only within Bulgaria (and the EU). This is the most important question for Balkan travelers. If you take a bus from Sofia to Istanbul (Turkey), Belgrade (Serbia), or Skopje (North Macedonia), 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 Turkey, Serbia, or North Macedonia?
Updated April 22, 2026
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