ZenSim does not provide a truly unlimited data eSIM for Algeria. The plans that carry the word “Unlimited” in their name give 3GB of high‑speed data per day and, once that daily limit is reached, the speed is reduced to 1000kbps. Therefore those plans are not unlimited in the sense of offering unrestricted high‑speed data.
Instead, ZenSim offers fixed data plans that give a set amount of high‑speed data for a specified period. Examples include a 40GB plan valid for 30 days, a 20GB plan valid for 15 or 30 days, and the 3GB/day plans that are valid for 5, 15, or 30 days. These fixed‑data options can be more cost‑effective unless a traveler is an extremely heavy data consumer.