The best eSIM for Japan: a practical guide

Japan is one of the most connected countries on earth — but roaming there is brutally expensive. Here's the smart way to stay online.

Japan consistently tops travel wish lists, and for good reason. But between Google Maps in Shinjuku, train timetables, and translating menus, you'll burn through more data than you expect.

How much data do you need?

Trip style	Recommended
Light use (maps, messaging)	1 GB / week
Normal use (+ social, photos)	3–5 GB / 2 weeks
Heavy use (video calls, streaming, hotspot)	10 GB+

Tokyo alone will eat data with maps and translation apps — when in doubt, size up or pick a plan with top-up support.

Networks: what matters

Our Japan plans run on NTT Docomo and SoftBank — the two networks with the best nationwide coverage, including Shinkansen routes and rural areas like Hakone and the Kiso Valley. You'll get 4G/5G in all major cities.

Install before you fly

Install the eSIM at home over Wi-Fi (it takes two minutes), and it activates when you land at Narita or Haneda and the phone connects to a Japanese network. Walk off the plane, turn on data roaming for the eSIM, and you're online before you reach baggage claim.

See Japan eSIM plans →