NextSIM does not offer a truly unlimited data eSIM for Montenegro. All of the plans listed for the country have a fixed data cap, ranging from 1 GB per day up to 2 GB per day in the Unlimited Plus options. Once that limit is reached, the data speed falls to a reduced rate of 512 kbps or 2000 kbps, as specified for each plan.
Travelers who need more data can choose from the fixed‑data options, such as eSIM Unlimited Plus 1 Day (2 GB) or eSIM Unlimited Plus 3 Days (2 GB/day), which provide larger daily allowances. For those preferring a larger total data volume, plans like eSIM GLOBAL 50GB 30Days Premium offer 50 GB for 30 days, albeit at a higher price.