Yes, Japan's infrastructure is renowned for its advanced connectivity, and your EastESIM will leverage this. You can expect a stable 4G/5G signal while traveling on the Shinkansen, making your journeys between cities like Tokyo and Osaka productive or entertaining. Even within the extensive underground networks of the Tokyo Metro and Osaka Subway, mobile signal is widely available in stations and often within the train tunnels themselves, ensuring you stay connected throughout your urban explorations.
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Will I have internet coverage on the Shinkansen (Bullet Train) and Tokyo Metro with my EastESIM?
Updated April 22, 2026
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