yaySIM currently does not offer an eSIM that includes a local Australian phone number or SMS capability. Travelers can only purchase a data‑only eSIM for use on 4G or 5G networks.
With a data‑only plan, VoIP apps such as WhatsApp, Telegram and iMessage can be used for calls and messaging, although some destinations may block or restrict certain apps. Travelers should verify that the messaging or voice services they rely on are accessible in Australia before purchasing a plan.