Japan runs on your phone: train routes, restaurant queues, QR-code menus, translation cameras. A travel eSIM is the cleanest way to stay connected, and it retires the pocket Wi-Fi router many visitors still collect at the airport.
eSIM vs pocket Wi-Fi
A pocket router has to be picked up, charged, carried and returned, and it only helps while it is in your bag. An eSIM lives inside your phone, works the moment you land and has nothing to hand back. Pocket Wi-Fi still makes sense for a group sharing one connection or for gadgets without eSIM support.
The network behind it
Our Japan plans use NTT docomo, Japan's largest mobile network, with strong coverage in cities, along Shinkansen lines and in most rural areas visitors reach.
How much data do you need?
Navigation and train apps are feather-light, but photo uploads and video calls add up fast. A one-week trip fits most travellers in 3–5GB; two weeks or heavier use points to 10–20GB.
On arrival
Install on Wi-Fi before departure, then switch the eSIM on after you land at Narita, Haneda or Kansai. Keep your home SIM on for SMS codes, with its data roaming switched off.
Boarding passes for Japan
Live prices in USD, all fees included.
JP · Nationwide
1GB
7 days · best entry price
$2.50
JP · Nationwide
2GB
15 days
$3.50
JP · Nationwide
3GB
15 days
$4.50
JP · Nationwide
3GB
30 days
$4.50
JP · Nationwide
5GB
30 days
$7.00
JP · Nationwide
12GB
4 days
$11.50
Quick answers
Do I get a Japanese phone number with a Japan eSIM?
No — travel eSIMs are data-only. Use LINE, WhatsApp or similar apps for calls.
Will my eSIM work on the Shinkansen?
Generally yes. Coverage along the main bullet-train lines is good, although tunnels can briefly interrupt the signal.
Is my phone eSIM compatible?
Most iPhones from the XS onwards and many recent Android phones support eSIM, but the phone must be carrier-unlocked. Check our compatibility page.
New to eSIM? Read the installation guide and check your phone on the compatibility page.