No, nextSIM does not provide a truly unlimited data eSIM for Montenegro. All nextSIM plans listed for Montenegro contain a fixed data allowance, such as 1GB or 2GB per day for the “Unlimited” titled offerings, or larger fixed caps like 50GB and 100GB for longer validity periods. After the allotted data is used, the network speed reduces to 512kbps or 2000kbps depending on the plan.
Travellers who need more data can choose one of nextSIM’s fixed‑data options. For example, the eSIM 100GB 30 Days Montenegro plan offers 100GB of high‑speed 5G, 4G, and 3G data for 30 days, while the eSIM 50GB 30 Days Montenegro plan provides 50GB for the same period. These fixed plans may be more cost‑effective for heavy data users compared to the capped “Unlimited” plans.