This specific Truly Roaming plan is designed exclusively for use within Mongolia. The iconic Trans-Mongolian Railway, a popular route for digital nomads, connects Russia, Mongolia, and China. Once your train crosses into Russia (Siberia) or China (Inner Mongolia), your Mongolian eSIM connection will cease. For this epic multi-country adventure, we recommend exploring Truly Roaming's regional or global eSIM options to maintain seamless connectivity across all three nations, ensuring you can stay productive and connected throughout your journey.
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Is this Truly Roaming eSIM valid for the Trans-Mongolian Railway journey through Russia or China?
Updated April 22, 2026
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