eSIMCard does not provide a true unlimited high‑speed data plan for Portugal. Every plan that includes “Unlimited” in its name actually offers a capped amount of data, most commonly 1 GB or 2 GB per day. When that limit is reached the speed is reduced to 512 kbps or 2000 kbps, so the data continues to be delivered but at a lower rate.
Travelers who need high‑speed data can choose from eSIMCard’s fixed‑data options. For example, a 1 GB/day plan is available for 1–20 days with prices ranging from about $4 to $22, while a 2 GB/day plan covers the same period at roughly $3 to $44. These fixed‑data plans can be more cost effective for users who consume a lot of data, rather than relying on the throttled “Unlimited” options.