For most first-time visitors, we recommend a country plan for Japan at 5–10 GB over 7–15 days. Openline routes across NTT DoCoMo, SoftBank, and KDDI, which gives excellent 5G coverage in Tokyo, Osaka, and Kyoto.

Plan sizing

  • Business trip / light use: 3 GB / 7 days.
  • Standard tourism (maps, rideshare, some streaming): 10 GB / 15 days.
  • Heavy use + hotspot to a laptop: Unlimited / 7 days.

Local tips

  • 5G is dense in central Tokyo, weaker in older suburbs. Openline hands you across partners as needed.
  • Japan Rail Pass apps often need mobile data — install offline maps as backup.
  • Convenience-store Wi-Fi is common if you want to conserve data.

Still stuck?

Reach Openline support 24/7 through any of these channels:

When you write in, include your purchase code (the OL-… code we emailed you) and, if the eSIM is already installed, its ICCID (Settings → Cellular → tap the Openline line). That's enough for us to find your plan and diagnose without back-and-forth.