Roamingo does not provide a truly unlimited data eSIM for Montenegro. All of its plans for the country have a fixed data cap, the largest of which is 10GB for 30 days. The only plan that uses an “Unlimited” label, Europe Unlimited for 1 day, contains just 2GB of high‑speed data before the speed is reduced, so it is not an unlimited data option.
Travelers who need more data can choose one of the fixed‑data plans; for example, the Montenegro 10GB for 30 days or the Montenegro 5GB for 30 days are among the larger offers. Fixed‑data plans are typically more cost effective than attempting to rely on a single‑day unlimited, limited‑cap plan.