Giga.Tel does not provide any eSIM plans for Australia that include a local phone number or SMS capability. Travelers can purchase only data‑only plans from the provider.
With a data‑only connection, popular VoIP services such as WhatsApp, Telegram, and iMessage can be used for calls and messaging. Because some destinations may block or restrict certain apps, it is advisable to confirm that the applications a traveler depends on are accessible in Australia before buying a plan.