Simbye does not provide Brunei eSIM plans that include a phone number or SMS capability. The available eSIMs are data‑only, so travelers can only use mobile data for internet access.
Even without a local phone number, many travelers use VoIP services such as WhatsApp, Telegram, or iMessage over the data connection. However, some destinations impose restrictions on these apps, so it is advisable to verify that the messaging or calling apps you rely on will function in Brunei before purchasing a data‑only plan.