Japan eSIM for a 7-day trip: two cities linked by Shinkansen

How much data 7 days in Japan takes

Seven days, two cities, one Shinkansen ride

The classic Thai itinerary is three nights in Tokyo, then the Shinkansen to Kyoto or Osaka for another three. The Nozomi from Tokyo to Kyoto takes a little over two hours, so the transfer is not tiring and you can still sightsee in the afternoon after checking out in the morning.

With half a day to spare, people often add Fushimi Inari and Arashiyama in Kyoto, or Nara. From Osaka, short trips cover Umeda, Dotonbori and Universal Studios. All of it is by city rail and works with a standard IC transport card.

Where seven days of data goes

The estimate table gives seven days as 4 GB for light, 8 GB for normal and 15 GB for heavy use. What differs from a five-day trip is the transfer day: you check out, check your train ticket on the phone, look up the route from Kyoto Station to the hotel, and perhaps post photos from the train window, all in one day.

• Some Shinkansen trains offer Wi-Fi, but do not rely on it. Tunnels can briefly interrupt mobile signal, so download anything you plan to watch on board beforehand.
• Reserved-seat Shinkansen tickets can be mixed with IC card travel, so save a screenshot of the car and seat details, as there may be no time to load the email at the platform.
• Budget hotels in Osaka and Kyoto have Wi-Fi, but speed varies a lot. Use it as a supplement for night-time downloads rather than your main connection.

Which plan fits seven days

The 7-day label can mislead you into thinking those packs match the trip, but Japan's 7-day packs are only 0.5 GB and 1 GB, below even the light-use figure of 4 GB in the estimate table. The 30-day, 10 GB fixed pack is the natural choice for normal use, with a margin for the transfer day.

Daily plans are another route, at 1, 2, 3, 5 and 10 GB a day, priced per day times seven. Note that the quota is a daily ceiling that does not carry over, so a heavy transfer day may hit the cap and slow down while quiet days leave quota unused. If your usage is uneven, the 10 GB monthly pack, which you can draw on across the whole trip, is more flexible.

What to have ready on the phone when changing cities

• A rail routing app such as Google Maps or a Japan-specific app that shows platform numbers and live times.
• A smartphone or physical IC transport card that works across the rail networks of several regions.
• The second hotel's address in Japanese saved in an offline note, to show a taxi driver if signal is poor.

A pre-flight order for a seven-day trip

Install the eSIM at home and switch it on after landing. Set mobile data to the Japan eSIM and turn off roaming on your main SIM to avoid unintended charges. Keep the main SIM on for SMS OTPs, because our eSIM has no phone number and does not receive SMS.