No, definitely not! Brunei is not part of any EU, UK, or US domestic roaming agreements, so relying on your home SIM for your group here will lead to very high costs. Most major carriers like AT&T, Verizon, T-Mobile, or UK's Vodafone/O2 will charge their highest "Rest of World" international roaming rates, which can be $10-$15 per day per person. A Triply eSIM provides a cost-effective and transparent solution, ensuring your entire crew stays connected without racking up exorbitant roaming bills.
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Is roaming free in Brunei with our UK, US, or EU SIM cards for our group?
Updated April 22, 2026
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