Lumbus does not provide a true unlimited data eSIM for Serbia. The plans titled “Serbia Unlimited” listed in the catalogue are fixed‑data plans that allow 3GB of high‑speed data per day; after the daily allowance is used, connectivity is throttled to 1000 kbps, which is not unlimited.
Travelers who need continuous data can choose from Lumbus’s fixed‑data options that do not impose daily limits, such as the Serbia 20GB 30Days plan or the Europe 50GB 180Days plan that covers Serbia. These plans provide a larger total data allowance and may be more cost‑effective for moderate or heavy usage.