Ohayu eSIM Data Plans for Mongolia

Ohayu offers an unlimited data eSIM plan for Mongolia called the Unlimited Monthly Trial. The plan has a 30‑day validity, costs $39.99 USD, and covers Mongolia as well as 124 additional countries. The data cap is listed as unlimited, but the plan includes a maximum speed of 1000kbps and may be throttled after heavy use, and a Fair Usage Policy may reduce speeds once a certain amount of data is consumed.

If speed restrictions are a concern, travelers should contact Ohayu to confirm whether the Fair Usage Policy applies and to find out how many gigabytes of data can be used at normal speed before throttling occurs.

No, Ohayu does not provide eSIM plans that include a local phone number or SMS capability for Mongolia. The available plans from Ohayu are data‑only, so travelers will have no cellular voice or text service tied to a Mongolian phone number.

Travelers who need voice or messaging can still use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. However, access to these apps can sometimes be limited or restricted in certain destinations, so it is advisable to verify the availability of your preferred services in Mongolia before purchasing an eSIM.

For Mongolia, Ohayu provides six single‑country data plans and two multi‑country plans. Prices range from approximately $15.49 to $159.99, while data caps extend from 3 GB to unlimited; validity periods span 14 to 90 days. Some plans allow tethering, and speed may be throttled to a maximum of 1 Gbps.