eSIM Agora does not currently provide an unlimited data eSIM for Brunei. The plans it offers are fixed data bundles, the largest of which is a 20GB plan valid for 30 days, with other available options of 10GB, 3GB, and 1GB for comparable durations. Travelers who need a larger data allowance can choose one of these fixed data plans, and for most users a fixed plan such as the 20GB or 10GB bundle is usually more cost‑effective than repeatedly purchasing smaller data credits, though an unlimited option is not available.