Short answer: For most travellers, a prepaid Japan eSIM with 10–20 GB and QR activation before departure is the easiest way to stay online in Tokyo, Kyoto and on the Shinkansen — without buying a SIM at the airport.
How much data do you need in Japan?
- Long weekend (3–5 days): 3–5 GB
- Two weeks: 10–20 GB
- Heavy streaming / hotspot: 20 GB+ or unlimited regional plan
Why not roaming?
International roaming to Japan often costs €10–15+ per day. A fixed-price travel eSIM in EUR lets you budget before you fly.
Install before you land
Install the eSIM at home, enable data on arrival at NRT/HND/KIX. You will need data for Google Maps, Suica apps, restaurant bookings and translation.
Compare providers on our eSIM comparison hub or buy directly: Japan eSIM plans →