Bordersim does not provide an unlimited data eSIM for Brunei. All listed plans have a fixed data cap, the largest of which is 20GB for a 30‑day period or 20GB for 90 days. Travelers who need more data can purchase a larger bundle, such as a 20GB 30‑day plan for $60.49 USD or a 20GB 90‑day plan for $78.99 USD, both offering 5G connectivity. Choosing a fixed data plan can be more cost‑effective for most users, although very heavy data consumers might prefer a pay‑as‑you‑go option that is not listed here.