
Best eSIM Japan 2025: The Complete Comparison
Honest comparison of the best eSIMs for traveling in Japan: Voilà vs. Airalo, Holafly, Ubigi, Saily. Price, reliability, blocked apps... it's all here!

When planning your trip to Japan, one question is bound to come up quickly: how can you stay connected once you're there? Let's be honest, traveling without the internet these days is a pain. Whether it's to find your way around, translate a menu, book a ticket, or simply share your photos, you're going to need it.
If you're reading this article, you're doing the right thing by getting informed before you leave. Japan is one of the most technologically advanced countries in the world, with incredible network coverage. But be careful: using your French mobile plan there can cost you a small fortune due to roaming charges.
👉 So, I'm going to share with you all the possible solutions for getting Internet access in Japan. You can read the whole article to compare them, but if you want to get straight to the point: the best solution is clearly the eSIM. Simple, quick to activate, and super convenient for travelers.
Now, if you want to understand why and discover the other options (free Wi-Fi, local SIM card, pocket Wi-Fi, etc.), stay with me: I'll go over everything so you can leave with peace of mind.

Rony
October 19, 2025
7 min read

Good news: in Japan, you'll find free Wi-Fi pretty much everywhere. So yes, it will never replace a real personal connection (such as an eSIM), but it can definitely help you out during your trip. Here are the main places where you can connect without paying anything:
When you arrive at Narita, Haneda, Kansai, Fukuoka (and almost all major airports in the country), you will have access to free Wi-Fi. Generally, all you have to do is open your browser, register (often with an email address), and you're connected.
The same applies to major stations, such as those on the Yamanote line in Tokyo: they all offer free access. Subways and buses in large cities such as Tokyo and Kyoto also have Wi-Fi hotspots. However, be aware that the quality may vary if many people are connected at the same time.
💡 Tip: There is even an official Japanese government app that allows you to easily locate all free Wi-Fi hotspots in the country and connect to them directly.
Large chains are your allies:
Starbucks → Free Wi-Fi, but you must register in advance on their official website.
McDonald's → almost immediate connection, without too many formalities.
Doutor Coffee and other major chains → same thing, you can connect easily.
On the other hand, in small local cafés, it's still hit or miss. If you plan to work or upload photos, check before you sit down.
You'll quickly become addicted to konbini (7-Eleven, Family Mart, Lawson). The good news is that they all offer free Wi-Fi. Just sign up online, and you'll have access to the network. It's super convenient when you want to check an itinerary or send a quick message.
Some giants such as Bic Camera or Don Quijote also offer free internet access, provided you register on their portal.
Most hotels in Japan offer free Wi-Fi for their guests. But let's be clear: the quality varies greatly depending on the establishment. In some business hotels, it works perfectly. In others, the connection can be slow or unstable. If this is important to you, consider checking traveler reviews before booking.
But keep in mind that these are temporary solutions: the connection may be limited, unstable, and you will often have to log in each time. If you really want to travel with peace of mind, it's best to have your own connection.
Using your US phone plan in Japan is really not a good idea. Why? Because the rates are just... crazy. Operators charge for every minute, every text message, every MB of data at prices that can blow your travel budget in a matter of hours.
⚠️ Indicative prices excluding travel/international passes (December 2025). These prices apply without any dedicated options and can cause your bill to skyrocket. All operators offer much cheaper Travel Passes - always check their official website before departure.
| Operator | Outgoing calls | Calls received | Text message | MMS | Data |
|---|---|---|---|---|---|
| Bouygues | $2.48/min | $1.08/min | $0.30 | $11.04 / MB | $11.04 / MB |
| Free | $0.24/min | $0.30/min | $0.27 | $1.13 / MMS | $10.45 / MB |
| Orange | $3.13/min | $1.40/min | $0.28 | $1.19 / MMS | $14.34 / MB |
| SFR | $3.13/min | $1.43/min | $0.66 | $2.06 / MMS | $14.20 / MB |
Today, there are three main ways to stay connected in Japan: local SIM card, Pocket Wi-Fi, and eSIM.
Each has its pros and cons, but let's be honest: if you want something simple, reliable, and hassle-free, the best option is clearly the eSIM.
The eSIM (or virtual SIM) is, without exaggeration, the most convenient way to access the internet in Japan.
Why? Because:
👉 It's a dematerialized SIM card that you add directly to your phone by scanning a simple QR code. In just a few seconds, you're connected. No plastic, no chip to insert: everything is virtual, but it works exactly like a traditional SIM card (or even better).
And the big advantage is that at here, we offer an eSIM specially designed for travelers to Japan:
Unbeatable price: 20 GB for only $14.80
No apps blocked
Connection sharing included
Reliability tested on site
French-speaking customer service
Money-back guarantee
The good news? All of this is available directly in our voilà app, in just a few clicks.
This is a fairly popular solution: you arrive in Japan, go to a store (at the airport or in the city center) and buy a local SIM card.
The advantages:
But it comes with quite a few drawbacks:
In short, it works, but it's less convenient than an eSIM.
The Pocket Wi-Fi is a small portable device that acts as a router. You turn it on, and you can connect your phone, computer, tablet... and even share it with other travelers.
The advantages:
But here too, be aware of the limitations:
In short: Pocket Wi-Fi can be a good option if you're traveling with friends or family and want to share the connection. But for solo travelers, eSIMs are 100 times easier.

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Travel abroad with confidence: no more roaming fees, connection struggles, or unexpected top-ups. With a travel-friendly eSIM, stay connected everywhere, stress-free and surprise-free.
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Rony is our in-house travel-connected expert. Always curious and never too far from an airport, he explores the latest destinations while testing the newest eSIM solutions. He signs our articles on travel and mobile technology, with a single mission: to turn his discoveries into clear, reliable, and smart advice to accompany you anywhere in the world.

Honest comparison of the best eSIMs for traveling in Japan: Voilà vs. Airalo, Holafly, Ubigi, Saily. Price, reliability, blocked apps... it's all here!


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