Bordersim does not provide an unlimited data eSIM for the Balkans. All of the plans for that region have a fixed data allowance that must be used within a set validity period.
The provider offers fixed data plans that give travelers a large amount of data, for example a 20GB plan valid for 30 days and a 20GB plan valid for 90 days. These plans cover the Balkans, including Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Montenegro, North Macedonia, Serbia, Kosovo and additional countries. Travelers who need a very large data allowance may find these fixed plans more cost‑effective than paying for a pay‑as‑you‑go credit, unless they are an extremely heavy data user.