No, nextSIM does not provide a true unlimited‑data eSIM plan for Montenegro. All plans that carry the word “Unlimited” in the name have a fixed data licence, such as 1GB per day with a reduced speed of 512kbps or 2GB per day with a reduced speed of 2000kbps, after which their high‑speed data is throttled.
If a user needs more data without a hard cap, nextSIM offers fixed‑size plans that provide larger allowances. For example, a 100GB eSIM plan valid for 30 days costs $86.26 USD, and a 50GB eSIM plan for 30 days costs $49.15 USD. These plans give clear data limits but avoid the speed reduction that occurs on the “Unlimited” offerings.