Simbye does not provide a truly unlimited high‑speed data eSIM for Portugal. The plans that carry the word “Unlimited” in their name, such as Portugal Unlimited 7 Days, 15 Days, and 30 Days, actually give 2 GB per day at full speed; after that limit is reached the speed is throttled to 1 Mbps.
If a traveler needs a larger data allowance, Simbye offers fixed data plans such as Portugal 100 GB for 30 days or Portugal 50 GB for 180 days. These plans provide a set amount of high‑speed data that must be used within the validity period, and they can be more cost‑effective for most users unless very heavy data consumption is expected.