We will help you to get SIM card when you get to Mongolia. And will advise you what SIM card you'd prefer.
Mongolia is a huge country located between Russia and China. Two main GSM-based operators operate here:
Two further providers Skytel and G-Mobile both only operate 3G networks in Ulaanbaatar and GSM-incompatible CDMA/EVDO networks in the rest of the country. That's why they are not listed on this page.