ZenSim does not provide a truly unlimited data eSIM for Sri Lanka. The plans that carry the label “Unlimited” actually offer 3GB per day of high‑speed data, after which the speed is throttled to 1000kbps.
Travelers who need more data without a daily limit can choose from ZenSim’s fixed‑data plans. For example, the Sri Lanka 40GB – 30 Days plan gives 40GB of high‑speed data for 30 days, while the Sri Lanka 20GB – 15 Days or 20GB – 30 Days plans provide 20GB for the corresponding validity periods. These fixed‑data options are generally more cost‑effective unless a user expects to consume an exceptionally large amount of data.