MeSIM does not provide a truly unlimited data eSIM for Madagascar. All of its plans that carry “unlimited” in the name actually give a fixed amount of high‑speed data per day—ranging from 500 MB to 2 GB—after which the speed drops to 384 kbps. Because the data allowance is capped each day, the plans are not unlimited in the sense of unlimited high‑speed data.
If a traveler needs a large data allowance, MeSIM offers fixed data plans that can be more cost‑effective for heavy usage. For example, the 50 GB/3‑day plan, the 50 GB/5‑day plan, and the 50 GB/7‑day plan all provide a substantial amount of data for a short period, and the 100 GB/30‑day plan offers a large daily allowance for a month. These fixed plans give travelers a clear data budget without the speed reduction that occurs after the daily high‑speed limit is reached.