Yes, your group can absolutely stay connected while zipping across Japan! The country's infrastructure is incredibly advanced, so you'll enjoy a stable 4G/5G signal on the iconic Shinkansen (Bullet Train) as you travel between cities like Tokyo and Osaka, perfect for sharing travel updates or planning your next stop. Even within the extensive underground subway systems of Tokyo and Osaka, mobile signal is widely available, ensuring everyone in your crew can navigate, chat, and keep up with their feeds.
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Will our group have internet coverage on the Shinkansen (Bullet Train) and Tokyo Metro with Triply?
Updated April 22, 2026
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