MeSIM does not provide a true unlimited data eSIM for Costa Rica. All plans that carry “unlimited” in the name are actually limited high‑speed bundles that give a set amount of data per day—ranging from 500 MB/day to 2 GB/day—after which the speed drops to 384 kbps.
Instead, MeSIM offers a range of fixed data plans that allow you to buy a large, single data allowance for a set period. Examples include a 100 GB/30 days plan priced at $70.99 USD, a 90 GB/365 days plan for $215.49 USD, and a 50 GB/30 days plan at $54.99 USD. These plans give travelers a straightforward, all‑inclusive data quantity, which can be more economical for heavy‑data users than the daily‑limited “unlimited” bundles.