nextSIM does not provide a truly unlimited data eSIM for El Salvador. Every plan that lists "Unlimited" in its name still contains a fixed data cap – either 1 GB, 2 GB, or 1 GB/day – and once that amount is reached the connection slows to a reduced speed of 512 kbps or 2000 kbps. These plans give the impression of unlimited usage but are subject to throttling after the set limit.
For travelers who need more data without the speed cut‑off, nextSIM offers fixed‑data plans that are cost‑effective for heavy usage. One example is the 100 GB 30‑day eSIM at $198.41 USD, and another is the 50 GB 30‑day eSIM at $101.75 USD. These plans provide large high‑speed data allowances that are more suitable for users who plan to consume substantial bandwidth during their stay.