Wiiline does not provide a truly unlimited data eSIM plan for Brunei. All plans list a specific data cap, such as 1GB/day or 2GB/day, and the “Unlimited” designation only indicates that the data will remain high‑speed up to that limit, after which the speed is throttled (e.g., to 512kbps or 2000kbps). Travelers can instead choose from Wiiline’s fixed data plans, such as the 50GB plan valid for 30 days or the 2GB/day plan valid for 7 days, which offer a set amount of high‑speed data for the specified period.