Airalo does not provide a truly unlimited data eSIM for Mongolia. The plans that carry the “Unlimited” label give 3 GB per day and, after that amount is used, the speed drops to 1 Mbps.
Travelers who need more data can choose Airalo’s fixed data plans. For example, a 20 GB plan is available for 15 days at $47 USD or for 30 days at $49 USD, and a 10 GB plan is offered for 7 days at $27.50 USD. These fixed data plans can be more cost‑effective unless a user is an extremely heavy data consumer.