Best eSIM for Mongolia: Plans, Prices and Coverage
August 1st, 2026
TL;DR
The cheapest Keep On Roaming plan for Mongolia is the Roam Like Home® Mongolia 1 GB 7 Days plan at £18.00. If you want the most data for your money, the Mongolia 10 GB 30 Days plan at £125.50 works out at £12.55 per GB, the lowest per-GB price in the range. For a short visit where you would rather not watch a data counter, the Mongolia Unlimited 1 Days plan costs £24.00. Every plan connects to the Mobicom network with 2G, 3G and 4G speeds. You can see the full range on the Mongolia plans page.
What to look for in a travel eSIM for Mongolia
Coverage and network. An eSIM is only as useful as the network behind it, so check which local operator your plan uses before you buy. Keep On Roaming plans for Mongolia connect to Mobicom, with 2G, 3G and 4G speeds available. Knowing the network in advance means no surprises when you land.
Plan flexibility. Trips to Mongolia vary enormously. A few days in Ulaanbaatar calls for a very different plan to a month spent moving between the capital and the countryside. Look for a range that offers both small fixed-data plans and unlimited options, and match the validity window to your itinerary so you are not paying for days you will never use.
Top-ups. Long journeys have a habit of stretching, and data has a habit of running out at the least convenient moment. The important question is whether you can add more data without buying and setting up a whole new eSIM. With Keep On Roaming, you can top up an existing eSIM with more data straight from your account dashboard.
Installation before you fly. The best place to sort out your connectivity is at home, on Wi-Fi you trust, with time to spare. Keep On Roaming eSIMs install before you travel via a QR code, and the eSIM activates when you arrive and connect. You land, your phone finds the network, and you are online without hunting for a SIM kiosk.
The Keep On Roaming plans for Mongolia
All eight plans below are data-only and run on the Mobicom network with 2G, 3G and 4G speeds.
| Plan | Data | Duration | Price |
|---|---|---|---|
| Mongolia 1 GB 7 Days | 1 GB | 7 days | £18.00 |
| Mongolia Unlimited 1 Days | Unlimited | 1 day | £24.00 |
| Mongolia 2 GB 15 Days | 2 GB | 15 days | £30.00 |
| Mongolia 3 GB 30 Days | 3 GB | 30 days | £41.50 |
| Mongolia 5 GB 30 Days | 5 GB | 30 days | £68.50 |
| Mongolia Unlimited 3 Days | Unlimited | 3 days | £70.00 |
| Mongolia Unlimited 5 Days | Unlimited | 5 days | £116.00 |
| Mongolia 10 GB 30 Days | 10 GB | 30 days | £125.50 |
On a per-gigabyte basis, the fixed-data plans get better value as they get bigger. The 1 GB plan works out at £18.00 per GB, the 2 GB plan at £15.00 per GB, the 3 GB plan at roughly £13.83 per GB, the 5 GB plan at £13.70 per GB, and the 10 GB plan at £12.55 per GB. If you expect to use plenty of data over a longer stay, the 10 GB 30 Days plan is the best value per gigabyte in the range.
The unlimited plans work differently. They suit short, intense stretches of travel, such as a stopover or the first few days of a trip when you are booking transport, translating menus and finding your way around, and you would rather not think about a data allowance at all.
Frequently asked questions
Will my phone work with an eSIM?
Most recent smartphones support eSIM, but it is worth checking before you buy. Look in your phone's settings for an option to add an eSIM or a new mobile plan. Your handset also needs to be unlocked from your home carrier to use a travel eSIM.
When should I install my eSIM?
Before you fly. You install the eSIM via QR code while you are still at home, and it activates when you arrive in Mongolia and connect to the network. That way there is nothing to set up at the airport.
What happens if I use up my data?
You can top up an existing eSIM with more data from your account dashboard, without installing a new eSIM. Add data as you need it and carry on.
Will my phone number change?
No. Keep On Roaming plans are data-only, so your existing SIM, number, calls and texts keep working alongside the eSIM. Friends and family can still reach you on your usual number.
When does my plan's validity start?
The eSIM activates when you arrive and connect, so your plan's days count from when you start using it in Mongolia, not from the moment you buy it.
Which network will I be connected to?
All Keep On Roaming plans for Mongolia use the Mobicom network, with 2G, 3G and 4G speeds.
Get connected before you go
Ready for Mongolia? Compare all eight plans side by side, pick the data amount and validity that suit your trip, and install your eSIM before you fly on the Mongolia plans page.