Is my SouthESIM plan for Bulgaria also valid in neighboring non-EU countries like Turkey or Serbia?

This is a super important question for travelers exploring the Balkans! A SouthESIM plan specifically for Bulgaria will typically only work within Bulgaria itself. If your itinerary includes traveling beyond its borders to non-EU countries like Turkey (perhaps to Istanbul from Sofia), Serbia (heading to Belgrade), or North Macedonia (visiting Skopje), your connection will cease to function. For multi-country adventures, consider our regional bundles that cover several countries, offering seamless connectivity across your journey.