simpleSIM does not provide an unlimited data eSIM for Mauritania. The available plans are a fixed‑data bundle of 5GB that is valid for 30 days, a 2GB bundle valid for 15 days, and a 1GB bundle valid for 7 days, all offering tethering and basic voice/SMS coverage. Choosing a higher‑capacity fixed plan, such as the 5GB option, can be a more economical choice for most travelers unless they need to consume a very large amount of data beyond these limits.