nextSIM does not provide a truly unlimited data eSIM for Central America. The plans that carry the “Unlimited” label actually contain a capped amount of high‑speed data and switch to a reduced speed after the cap is reached, so they are not unlimited in the sense of continuous high‑speed access.
Travelers who need large data allowances can choose fixed‑data plans instead. For example, nextSIM offers an eSIM Global 20GB 30Days plan and an eSIM Global 10GB 30Days plan, both of which cover Costa Rica, Nicaragua, Panama and El Salvador for a 30‑day period and provide high‑speed data without the post‑cap throttling that applies to the “Unlimited” plans.