ZenSim eSIM Data Plans for Mongolia

ZenSim does not offer a true unlimited data eSIM for Mongolia. The only plan that includes “Unlimited” in its name, Mongolia Unlimited STANDARD – 5 Days, actually provides 3 GB of high‑speed data each day and switches to a throttled speed of 1000 kbps once that daily limit is reached, so it is not unlimited.

Instead, ZenSim’s options are fixed data plans. For example, the 10 GB – 15 days and 10 GB – 30 days plans give a larger overall data allowance, while the 5 GB – 5 days, 5 GB – 15 days, and 5 GB – 30 days plans offer shorter or longer validity periods. Choosing a fixed data plan can be more cost‑effective unless a traveler expects extremely heavy data usage.

ZenSim does not provide an eSIM for Mongolia that includes a local phone number or the ability to send SMS messages. Only data‑only plans are available from this provider. Travelers who need voice or messaging can use VoIP services such as WhatsApp, Telegram, or iMessage over the data connection; however, some destinations may block or restrict these apps, so it is advisable to confirm that the services they rely on are accessible in Mongolia before purchasing.

ZenSim offers 12 single‑country data plans for Mongolia. Among these, 11 are fixed‑data‑amount plans in which the allotted data remains usable for the entire validity period, while 1 plan is a daily‑data‑cap plan that replenishes the data allowance each day. Prices range from $18.00 to $216.00, data caps vary between 1 GB and 10 GB, and validity periods span 5 to 30 days. No multi‑country plans are available for Mongolia.