This specific WestESIM plan is valid exclusively within Croatia. Many travelers embark on a comprehensive 'Balkan Tour,' intending to visit countries such as Serbia (Belgrade) and Montenegro (Kotor) alongside Croatia. If your journey extends beyond Croatia's borders, you would need to purchase a separate WestESIM for those specific countries or opt for a multi-country European plan that includes them. This ensures continuous premium connectivity throughout your entire itinerary.
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Is this WestESIM valid for a Balkan tour including Serbia and Montenegro?
Updated April 22, 2026
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