MobiMatter does not provide an unlimited data eSIM for Australia. All of its Australia‑focused plans have a fixed data cap, such as 50 GB for 30 days or 50 GB for 180 days, as well as smaller fixed‑data options like 40 GB or 35 GB that remain valid for a year.
Travelers who need a large amount of data may choose one of MobiMatter’s fixed data plans. For example, the 50 GB plan for 30 days costs $29.99 USD, while the same data allowance is available for 180 days at $89.99 USD. Because these plans require a single purchase and have a clear, finite data allowance, they can be more cost‑effective than an unlimited plan, especially for users that are not extremely heavy data users.