BNESIM does not provide a true unlimited data eSIM for Sri Lanka.
All plans are fixed‑data bundles. For example, the “Surf 100 GB in Sri Lanka for 30 days” plan gives 100 GB of high‑speed data that expires after 30 days, and the “Surf 100 GB in Sri Lanka” plan offers the same 100 GB with no expiry. The plan named “Sri Lanka Unlimited 10 days” actually limits data to 3 GB per day; after that the speed is reduced to 1 Mbps, so it is not a genuine unlimited plan. Travelers looking for large data allowances may choose one of the fixed‑data options, which can be more cost‑effective unless they require truly unlimited usage.