Roamingo does not provide a truly unlimited high‑speed data eSIM for Montenegro. The only plan that carries the word “Unlimited” in its name, “Europe Unlimited for 1 day,” actually offers 2GB of high‑speed data; once that cap is reached the speed is throttled.
Travelers who need larger data limits can choose one of Roamingo’s fixed‑data options. For example, a 20GB plan for 30 days is available at $29.10, and a 10GB plan for 30 days costs $16.40. These plans give a fixed amount of high‑speed data and, if the cap is exceeded, the provider typically reduces the connection speed to a lower data tier. Selecting a fixed‑data plan can be more cost‑effective unless a user requires truly unlimited data.