nextSIM does not offer a truly unlimited high‑speed data plan for Central America. Plans that carry the word “Unlimited” in the name provide a fixed amount of high‑speed data – for example, the eSIM Unlimited Plus 1 Day Global includes 2GB of rapid data before the speed drops to 2000kbps, and the Unlimited Standard 5 Day plan offers 1GB per day before throttling to 512kbps. Because the data is capped, these plans are not equivalent to an unlimited offer.
Instead, nextSIM provides several large fixed data options that cover all of Central America. For instance, the eSIM GLOBAL 50GB 30Days Premium plan supplies 50GB of high‑speed data for 30 days, and the eSIM GLOBAL 30GB 30Days Premium offers 30GB for the same period. These fixed‑data plans give travelers a clear amount of data and may be more cost‑effective than the “unlimited”‑named options if the user is a heavy data consumer.