eSIM Firsty pour Brunei en 2026

A large range of plans makes sizing the main decision: the risk is buying more data than a fortnight actually needs, rather than finding too little choice. Firsty has not published which operators it uses in Brunei, so its radio side is unknown; the table above is where to check allowances and validity. It lists technology up to 5G, but does not state where traffic breaks out. Top-up is supported, so an exhausted plan can be extended rather than immediately rebought.