Pocket WiFi in Japan: cost, coverage and when to pick eSIM instead

• A pocket sized 4G or 5G router you rent for your trip.
• Connects up to 5 to 10 devices, so it suits couples, families and groups.
• No SIM swap and no phone settings to change.
• Runs on the major Japanese networks, so coverage follows the rail lines closely.

Typical rentals land between 400 and 900 yen per day depending on the data allowance and the router model. Unlimited plans usually include a fair use throttle after a few gigabytes a day. Insurance for loss or damage is normally a small daily add-on and worth taking.

• Airport counters at Narita, Haneda, Kansai and Chubu are the usual pickup point.
• Hotel delivery is common if you land late or transfer straight onto a train.
• Return by dropping the router in a prepaid post box at the airport.
• Reserve before you fly, walk up stock at the counters runs out in peak season.

• Travelling alone with a recent phone: an eSIM is cheaper and needs no pickup.
• Two or more people sharing: pocket WiFi is usually cheaper per person.
• Need a laptop or tablet online: pocket WiFi wins.
• Worried about battery: an eSIM has nothing extra to charge, a router lasts most of a day.

Shinkansen cars offer free onboard WiFi, but it slows down when the train is full and drops in tunnels. A router or an eSIM keeps maps, seat reservations and translation working through the day. See our shinkansen WiFi and power outlets guide for what is available at your seat, and check our WiFi Japan page for current rental options.