ZenSim does not offer a truly unlimited data eSIM plan for Malaysia. Its plans called “Malaysia Unlimited STANDARD” actually provide 3 GB of high‑speed data per day and, after that amount is used, the speed is reduced to 1000 kbps. Therefore the plan has a hard cap and is not unlimited.
If a traveler wants a larger, fully unrestricted data package, ZenSim sells fixed‑data plans that may be more cost‑effective for heavy usage. For example, the Malaysia 40 GB‑30 Days plan offers 40 GB of high‑speed data for 30 days at $34.20 USD, while the Malaysia 20 GB‑30 Days plan provides 20 GB for 30 days at $18.90 USD. These fixed packages give a clear data allowance without a reduced‑speed threshold.