
Why Airalo eSIM is good for Japan travel?
In Japan, which is recommended: eSIM, portable Wi-Fi, or SIM?
At the moment, eSIM is the most convenient.
・Mobile Wi-Fi : It’s a hassle to return mobile Wi-Fi,
・SIM : You have to insert SIM cards for everyone after the flight and store them properly, otherwise you may lose your own SIM card.
・eSIM : Everything is solved with an app, so it’s the easiest and cheapest.
What Is Airalo? The Easiest Way to Stay Connected While Traveling
Airalo is an eSIM app that lets you buy data plans for over 200 countries — no physical SIM card needed. You just install it on your phone, choose your destination, and boom — you’re online.
No need conversations with staff at local telecom shops.
15% discount for new users
Click the button below to get 15% off for new users
Why I Genuinely Recommend It
Airalo works accurately in Japan, Thailand, Vietnam, and Europe.
Quick setup: I downloaded the app and my data was available within 5 minutes. It’s especially great that you can have it ready before you leave the country.
Very affordable: If you don’t plan on using a lot of data in Japan, you don’t have to pay $40 at the airport.
No technical issues: The app walks you through every step. After installing the app, just activate it from your phone’s settings app.
What You Should Know
It’s not perfect — so let me be real with you:
- It’s data-only. No phone number. But if you use WhatsApp, LINE, or Messenger, you’ll be fine.
- You need a phone that supports eSIM. Most recent iPhones and Androids do.
- If you’re heading to a country like China, some apps (like Google or Instagram) may be restricted — that’s not Airalo’s fault though.
Final Thoughts
Is Airalo perfect? Not always.
Is it insanely convenient and worth having on your phone before any international trip? 100%.
So if you’re tired of arriving in a new country and scrambling for signal — just install Airalo and relax.
No stress. Just data.

Make your Japan trip comfortable with Airalo!
Choose the most affordable eSIM
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Founder of Rental Japanese / Tokyo-based
Guided 500+ guests from more than 30 countries.
Specializes in customized private tours, local bar hopping, onsen experiences, and flexible Tokyo day trips with English support.
All information in this article is based on real on-the-ground guiding experience in Tokyo.