What is the best eSIM for Japan?
For most Golden Route trips (Tokyo, Kyoto, Osaka), a 5–10 GB plan from Airalo, Nomad, or Saily covers a week of maps, translation, and transit apps. Holafly's unlimited plan suits data-heavy travelers but does not include hotspot tethering. GigSky runs on NTT Docomo, which has the strongest rural and Shinkansen corridor coverage if you're traveling beyond the main cities.
How much data do I need for Japan?
Plan for roughly 700 MB to 1.2 GB per active sightseeing day. Google Translate's camera mode for menus and signs, IC card transit apps (Suica, ICOCA), Google Maps navigation, and local ride apps (S.RIDE, GO) all run throughout the day. A 5 GB plan covers most week-long city trips. Go to 10 GB if you visit rural areas, hotspot a laptop, or travel for more than ten days.
Does eSIM work in Japan?
Yes. Japan has excellent eSIM support with no regulatory restrictions on activating plans inside the country. Major networks (NTT Docomo, SoftBank, KDDI au) all carry eSIM traffic from international providers. Coverage is strong in cities and on Shinkansen corridors; rural areas and mountain regions can have gaps, so download offline maps before heading out.
Does a Japan eSIM include hotspot support?
It depends on the plan. Holafly's unlimited Japan plan does not include tethering. Airalo, Nomad, Saily, Ubigi, and GigSky plans generally support hotspot — but check the specific plan details before buying, as providers occasionally change this. If tethering a laptop is important, confirm it explicitly on the plan page before purchasing.