Wiiline does not provide a truly unlimited eSIM plan for Mongolia. All of its listed plans for the country have a hard data cap, such as 1 GB per day or 2 GB per day, or a fixed amount like 50 GB for 30 days or 100 GB for 30 days.
If a traveler needs more data, a fixed data plan may be a more cost‑effective option. For example, the Mongolia 50 GB‑30 days bundle supplies 50 GB of high‑speed data for a month, and the Global Max 100 GB‑30 days plan delivers 100 GB of data for 30 days, both allowing tethering and exposing Mongolian coverage. These offerings give larger data allowances, though they still come with a clear limit.