nextSIM’s plans for the Republic of the Congo that carry “Unlimited” in the name are not truly unlimited. Each of these plans provides a fixed amount of high‑speed data—either 1GB or 2GB per day—with the connection automatically throttled to 512kbps or 2000kbps once the allotted data is consumed. Therefore, no high‑speed data plan is available that offers unlimited usage without reduction.
If you need a plan that guarantees a larger, consistent data allowance, nextSIM offers fixed‑data options such as the 10GB 30‑day Premium plan and the 20GB 30‑day Premium plan for the Republic of the Congo. These plans provide a larger total data amount at a consistent speed, and may be more cost‑effective for travelers who expect to use a substantial amount of data during their trip.