No, eSIMCard does not provide a truly unlimited data eSIM for Brunei. All of the plans that carry “Unlimited” in their names give a fixed amount of high‑speed data each day—either 1 GB/day or 2 GB/day—and once the cap is reached the speed is reduced to 512 kbps or 2000 kbps. Because the high‑speed allowance is limited, these plans are not unlimited in the usual sense.
eSIMCard offers alternative fixed‑data options that may be more cost‑effective for most travelers. For example, a 30 GB data plan valid for 30 days or a 50 GB plan valid for 60 days provides a large, uninterrupted data allowance without the daily throttle that accompanies the “Unlimited” names. These‑data plans are available in Brunei and give users more predictable high‑speed data coverage.