Mobile coverage in Japan
3 carriers support Roamgo eSIMs in Japan. Tap any operator below to see their official coverage map.
Japan's prepaid SIM market is tourist-unfriendly — most contracts require a Japanese address and a hanko seal. A roamgo eSIM works around all of it: install at home, activate at Narita or Kansai, and you're navigating the Tokyo subway map within minutes of landing.
Networks: Roams onto NTT Docomo, SoftBank, and au by KDDI. Docomo has the strongest coverage in mountainous areas (Mt Fuji climbers, ski resorts); SoftBank tends to be fastest in central Tokyo.
Carriers in Japan
Each link opens the operator's own coverage map in a new tab — the most authoritative source for what's actually live in your destination.
- View coverage mapMapNTT Docomo2G3G4G5G
- View coverage mapMapKDDI (au)2G3G4G5G
- View coverage mapMapSoftBank
Coverage maps are maintained by each operator and reflect their current network footprint. Your Roamgo eSIM roams onto these networks automatically — no manual selection required.
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