eSIMs are the latest in mobile on the go. Whether you are travelling to Japan for a short weekend trip, or embarking on an epic multi-week journey, having reliable access to the internet makes all the difference. Gone are the days of expensive roaming data charges, and affordable, convenient, and reliable eSIMs have taken over the market, providing essential access to the internet for translation and navigation apps. With so many different providers, it can be hard to find the best eSIM to go with for your trip to Japan.

What is an eSIM, and why do I need one for Japan?

An eSIM (embedded Subscriber Identity Module) is a digital SIM Card built directly into a device, such as a phone, tablet, or watch. eSIMs work just like the little plastic SIM cards in most smartphones, but instead are activated and connected to a mobile network either via an app or by scanning a QR Code, allowing you to be connected to mobile data networks without outrageous data roaming charges. Importantly, not all devices are compatible with connecting to an eSIM due to technological constraints. You can check if an eSIM is compatible with your device here.

When it comes to travelling Japan, having an eSIM is one of the best ways to stay connected to the internet for your trip. Be it to access translation apps, navigation maps, or simply to ask for help, staying connected to the internet is highly important. And while the internet is fairly accessible throughout major cities across Japan, nothing compares to the direct and instant connection straight from your smartphone whenever and whereever youy need it.

Japan eSIM Provider Comparison Table

In this article, we’ll be summarising and comparing 4 of the top eSIM providers for travelling in Japan. And whille these 4 are pretty comparable and reliable, there are some subtle differences.

Provider	Plan Length	eSIM & SIM Card Plans	Unlimited Data Plans	Value for Money	Ease of Use
Sakura Mobile	1–90 Days	Yes	Yes	Good, comparable to other providers	Good, set-up within 5 minutes
Airalo	1–30 Days	No	Yes	Good, comparable to other providers	OK, requires an app to set-up and manage
JJE	7–30 Days	No	Yes	Good, comparable to other providers	Good, set-up within 5 minutes
Saily	7–30 Days	No	Yes	OK – Good for lower data usage	OK, requires an app to set-up and manage

Our favourite - SakuraMobile

Sakura Mobile is without a doubt our top pick for Japan eSIMs. Time and again, while other physical eSIM companies have left our friends, colleagues, clients stranded, Sakura Mobile has consistently provided excellent service with plans suited to all kinds of travellers. Enjoy eSIM plans that work for your trip to Japan, whether you are coming for a weekend, a weekend, or a month – with plans up to 90 days!

Using the NTT Docomo network – Japan’s largest and most reliable mobile network covering 99.4% of Japan’s population, using a Sakura Mobile eSIM ensures that you stay connected wherever you go.

Running out of mobile data while travelling, and it always seems to reach its cap at the worst imaginable time, right when you gst lost and need directions or to ask for help. While more expensive, unlimited data plans are especially beneficial when travelling, especially when travelling to a country that speaks a different language and can be hard to get around without good online mapping apps. For that reason, and the reliable coverage for just about every part of the country, Sakura Mobile is our top pick.

Another benefit of Sakura Mobile is their flexible SIM card options. Whether your phone is compatible with eSIMs or not, SakuraMobile also sells physical eSIMs and pocket WIFI devices, ensuring that almost any device can be connected to their highly reliable and easy-to-use network, which is especially important for those travelling in groups.

Benefits of Sakura Mobile

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Purchase a Sakura Mobile eSIM and get connected within minutes of touching down in Japan.

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Airalo

Airalo is one of the world’s most recognised eSIM providers and is often the cheapest option for travellers visiting Japan.

The service offers a wide range of plans from just a few gigabytes up to larger data packages suitable for longer holidays. Installation is simple through the Airalo app, making it ideal for first-time eSIM users.

Airalo is one of the world’s most recognised eSIM providers and is often the cheapest option for travellers visiting Japan.

Airalo uses the Softbank and KDDI networks for their eSIMs, both highly reliable networks covering a large portion of the poplation, ensuring connectivity across all of the major cities and destinations through Japan.

Benefits of Airalo

Journey Japan ESIM (JJE)

Founded by Chris Broad, from the youtube channel ABroadInJapan, the Journey Japan eSIM (JJE) is the new kid on the block taking over Japan’s eSIM market. Journey Japan eSIM is a travel-focused provider that specialises exclusively in connectivity for visitors to Japan. Rather than offering worldwide coverage, its plans are designed specifically for travellers exploring Japan, with straightforward pricing and activation.

The JJE service uses Japan’s major mobile networks, providing reliable coverage in cities such as Tokyo, Osaka, Kyoto, Hiroshima, and most rural tourist destinations. Its simple plan structure makes it a good option for travellers who don’t want to compare dozens of different data packages.

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Travel Japan with confidence using one of the newest and most exciting Japan eSIMs on the market.

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Saily

Made by the team behind NordVPN, Saily is one of the newer entrants into the travel eSIM market.

The service focuses on simplicity, making it easy to purchase and activate plans with minimal setup. While it currently has fewer plan options than some competitors, it provides dependable coverage across Japan.