Maps, route links and some QR train tickets need mobile data. Start with your phone’s compatibility, then choose enough data for your trip.
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Confirm eSIM support for your exact model and country version, and that the phone is carrier-unlocked. Check the plan’s activation policy before installing: installation and the start of validity are not always the same.
Compare total-data and daily-data options for the same trip length. Check current pricing, hotspot support, speed limits and support language.
One Japan data-only product with total-data and daily-data packages. Choose duration and allowance together. Unlimited options also have a daily high-speed limit; read the selected package rules.
The direct links remain available if the product card does not load.
An alternative using the NTT docomo network, with the setup QR code delivered by email. Compare the selected GB allowance and validity. After the purchased high-speed allowance, speeds may be reduced to 200 kbps; do not assume the headline means unlimited high-speed data.
The direct links remain available if the product card does not load.
A Trip.com alternative offering daily or total-data packages for 1–30 days, advertised with 24-hour billing. Compare the same duration and GB allowance with the other options. Confirm the selected network, activation time, reduced-speed rules and tethering before paying.
Check total GB versus a daily allowance, reduced speeds after the high-speed limit, hotspot/tethering, top-ups, coverage and refund terms. “Unlimited” and “5G” alone do not explain the service. Data-only plans may not include a Japanese number, voice calls or SMS.
Save setup instructions and support contacts while connected to Wi-Fi. After arrival, follow your provider’s data-line and roaming settings. Keep your home line’s roaming charges in mind. Try loading a map before leaving the airport.
A physical SIM needs a suitable unlocked SIM slot. Pocket Wi-Fi can serve a group, but you need to stay near the device, charge it and follow pickup/return rules. Check the airport’s current counters and opening hours.
Check whether your home carrier already includes Japan, how much high-speed data is available, and the charges for calls and SMS. Another SIM is not always necessary.
Information checked: 14 October 2026. Prices, timetables and product rules can change.
