eSIMCard does not have a true unlimited data eSIM for Luxembourg. All plans that carry “Unlimited” in their name actually provide a capped amount of high‑speed data—such as 1 GB or 2 GB over the validity period—after which the network reduces the speed to a throttled bandwidth (for example 512 kbps or 2000 kbps). Therefore, while the name suggests unlimited, the high‑speed data supply is finite and gets slower once the cap is reached.
If a traveler needs a larger, non‑capped data allowance, eSIMCard offers fixed‑data options such as the 50‑GB plan with unlimited minutes for 30 days or the 35‑GB plan with unlimited minutes for 30 days, both available in Luxembourg. These fixed plans give a larger data amount without throttling, but the cost may be higher for heavy data users compared to the “Unlimited” plans with a lower data cap.