nextSIM does not provide a truly unlimited high‑speed data plan for Portugal. All plans listed under the “Unlimited” name have a data cap of either 1GB or 2GB; once that limit is reached the speed is throttled to 512kbps or 2000kbps. Because the data allowance is capped, these plans are not considered unlimited for high‑speed usage.
Instead nextSIM offers fixed‑data plans that give larger, unthrottled data allowances for a set period. For example, a 100GB plan for 30 days costs $70.69 USD, and a 50GB plan for 30 days costs $197.65 USD. These fixed‑data options can be more cost‑effective for travelers who need substantial data without the speed restrictions that apply after the “unlimited” caps are reached.