eSIM.sm does not currently offer an unlimited data eSIM for Montenegro. Instead, the provider sells fixed‑data plans that give users a set amount of high‑speed internet for a defined period. For example, a 20 GB plan for 30 days is available for $55.90 USD, and a 10 GB plan for 30 days costs $29.30 USD.
Choosing a fixed‑data plan can be more cost‑effective unless a traveler expects to consume data far beyond the plan’s allowance. Travelers who need a larger data quota can select the 20 GB option or browse other country‑wide plans from eSIM.sm’s catalog.