Imagine this: You’ve just finished a long flight and arrived at Narita or Kansai Airport. You take out your phone, ready to start your journey, only to find that the eSIM you bought is painfully slow. You can’t look up directions or confirm your bookings. It’s a frustration no traveler should have to face.
Google Maps won’t load, and you have no idea how to get to your hotel.
You can't make online reservations, shop, or share your arrival on social media.
This is a common issue. Many eSIMs sold to travelers in Japan actually use "roaming" services that route data through third-party countries like Hong Kong or Singapore. Because your data has to travel back and forth across thousands of miles, you experience extreme lag and technical issues. This isn't necessarily a restriction by the provider; it’s a physical limitation of distance, compounded by Japanese security systems that block certain foreign-routed traffic to protect content.
When traveling in Japan, don't you deserve the absolute peace of mind that comes with a reliable connection?
The smartest way to leverage Japan's world-class infrastructure is to connect directly to a local carrier. There is no reason to waste your precious vacation time on unstable, overseas-routed roaming services.