eSIMCard does not provide a truly unlimited high‑speed data eSIM for Portugal. Every plan that carries “Unlimited” in its name actually gives a fixed data allowance – for example, 1 GB total or 1 GB per day – and once that quota is reached the connection speed is throttled to 512 kbps or 2000 kbps depending on the plan.
Travelers who need more data can choose from the fixed‑data offerings available. For instance, eSIMCard sells 50 GB and 35 GB data plans for 30 days in Portugal (priced around $31 USD), as well as 100 GB unthrottled plans for up to 31 days, providing a larger amount of high‑speed data without the “unlimited” name. These options are more cost‑effective for heavy data users who do not require a truly unlimited data allowance.