No, Numero eSIM does not offer an unlimited data eSIM for Montenegro. The available plans are fixed‑data bundles with caps of 5GB, 10GB, or 20GB for a 30‑day period. Travelers who need a higher data allowance can choose the Montenegro 20GB for 30 days plan or the Montenegro 10GB for 30 days plan, both of which provide 5G coverage in Montenegro. Fixed‑data plans can be more cost‑effective for most users unless an extremely heavy data consumption is required.