Travelling to Japan? A MobiSIM eSIM for Japan gives you fast and reliable mobile data from the moment you arrive in one of the world's most connected countries, without needing a physical SIM card. Whether you are visiting Tokyo, Osaka, Kyoto, Hiroshima, Nara, Sapporo, Fukuoka, Nagoya, or travelling by Shinkansen to rural towns, mountain onsen resorts, and coastal destinations, MobiSIM provides mobile data for maps, train booking apps, hotel check-ins, restaurant searches, messaging, translation tools, and travel updates. Choose a MobiSIM eSIM data plan for Japan and get 4G/5G coverage where available through supported local networks. Activation is simple: after purchase, your QR code is delivered by email, then you scan it and follow the setup steps on your device. Your existing SIM can remain active for calls while MobiSIM provides data throughout your trip.
eSIM for Japan — Instant 4G/5G Data Plans
69 plans available — from €3.49. Instant activation, no physical SIM required.
Useful travel information
A few details that help before and during your trip.
Mobile coverage in Japan
Japan's mobile network is served by three main operators: NTT Docomo, SoftBank, and au (KDDI). 4G LTE and 5G coverage is comprehensive across Tokyo, Osaka, Kyoto, and all major cities, with excellent connectivity along Shinkansen bullet train routes and main rail corridors. Japan's urban coverage is among the densest and fastest in the world. Rural areas including the Japanese Alps, Tohoku region, Hokkaido wilderness, and remote island destinations such as Yakushima and the Ryukyu Islands have coverage in town centres but signal weakens in mountain terrain and on hiking trails. MobiSIM connects through supported Japanese networks to deliver fast and reliable data across Japan's main cities, transit hubs, and tourist destinations.
