Roamless lists 3 single‑country data plans for Mauritania and 5 multi‑country plans that include Mauritania. These plans offer a fixed amount of data that can be used continuously while the plan is active, and the data does not disappear once the validity period is reached because the validity does not expire. Prices range from about $0.00 to $276.75, and the amount of data goes from roughly 50 MB up to 15 GB.
In addition, Roamless provides 12 pay‑as‑you‑go top‑up options. Each top‑up is a data credit valued at about 5 GB to 100 GB at the current Mauritanian rate; the credit itself does not expire, so unused data remains available for future trips.