eSIMNow does not provide an unlimited data eSIM for Brunei. All of the listed options for Brunei have a hard data cap: the smallest plan offers 5GB for 30 days, while the largest gives 20GB for 30 days, or 20GB for 90 days on a global plan that includes Brunei.
If an unlimited plan is not available, travelers can choose one of these fixed data plans. For example, the Brunei Darussalam 20GB 30Days plan gives 20GB of data for one month, and the Global139 20GB 90Days plan offers the same amount of data for three months at a higher price. A larger data allowance may be more cost effective for heavy users, but the plans remain capped at the specified data limits.