Is this WestESIM plan valid for the Trans-Mongolian Railway journey through Russia or China?

The WestESIM plan specifically for Mongolia is exclusively valid within its geographical boundaries. For travelers embarking on the iconic Trans-Mongolian Railway, which connects Russia, Mongolia, and China, your connection will activate upon entering Mongolia and cease once the train crosses into another country. To maintain seamless connectivity throughout this legendary journey, WestESIM offers regional or global eSIM plans designed to cover multiple countries, ensuring you remain online from Irkutsk to Beijing.