8 Best eSIMs for Japan Travel: Honest 2026 Verdict

eSIMs have been taking the world by storm over the past few years. They're easy to install, convenient to purchase and top up remotely, and let you choose exactly how much data you need and for how long.

In Japan, they're often the only option for travelers, as most providers will only sell SIM cards with monthly plans to Japanese citizens or people with a residence card.

We’ve tested a bunch of different eSIM providers for Japan, and although our favorite is eSIM Japan, we’re comparing all the top digital nomad-approved providers in this hands-on guide, based on pricing, data options, setup ease, and network quality.

Japan Network Carrier Realities (Docomo vs. au vs. SoftBank)

In most countries, any major network will serve you fine. Japan is different. The three major carrier backbones have distinct strengths, and the eSIM you choose will run on one (or two) of them. Here's what you need to know before choosing:

Recommendation for remote workers: If you need reliable connectivity outside major cities, prioritize providers that run on NTT Docomo or KDDI (Ubigi, Mobal, eSIM Japan). For the fastest 5G speeds in Tokyo and Osaka, SoftBank-backed plans (Saily, Airalo, eSIM Japan) are excellent.

1. Saily: Best for Cyber Security

If cybersecurity and great value is your priority (and as a digital nomad, it should be), then you have to take a look at Saily. They have a super simple range of plans that go from 1GB for 1 day to 20GB across 30 days that are easy to install and activate via a QR code, email, or the Saily app.

What makes Saily special, however, are the built-in security tools like a VPN, web protection, and ad blocker (which can also save up to 28% of your data). It's a premium eSIM, and it certainly delivers in terms of internet security and reliability.

2. eSIM Japan: Best Overall

From daily plans to fixed data and unlimited 5G, eSIM Japan has an amazing range of eSIM options to meet the needs of pretty much anyone. They work with Japan’s top networks, Softbank and KDDI, to ensure a reliable connection wherever you are, with unique city-specific plans optimized for the best possible coverage based on where you’re staying.

Their basic unlimited plan gives you 1GB/day before throttling, or you can upgrade to their 5G unlimited max data plan to ensure you’re never left wanting more.

3. Holafly: Best for Unlimited Data

Holafly offers a selection of unlimited data plans for the exact amount of time you need, from one day to three months. Although on the steeper end when it comes to pricing, you get unlimited 5G data with no data limits or throttling, except for a 500MB/day max for data sharing.

4. Mobal: Best for Calls and Texts

Unlike most Japanese eSIMs, a Mobal eSIM actually provides you with a real Japanese phone number. Incoming calls and texts are totally free, but you’ll have to pay additional fees for outbound actions of ¥44/minute (~$0.31) for domestic calls, and ¥65-¥200/minute (~$0.46-$1.40) for international calls, and from ¥33 (~$0.23) for texts.

Mobal is also worth considering for digital nomads in Japan as it has long-term plans that roll over month to month, including a Japanese phone number. Activation is straightforward too: Mobal now delivers your eSIM profile and activation code instantly via email, so there's no waiting for physical delivery or pickup.

5. Ubigi: Best Variety of Plans

Ubigi definitely shines when it comes to variety. They have low data, heavy data, unlimited, and even annual plans to cover just about anyone visiting Japan. Their monthly rollover plans are particularly great for anyone on the Japanese digital nomad visa who wants reliable 5G data that auto-renews and can be cancelled at any time. Ubigi connects to both KDDI au and NTT Docomo, which makes it the top pick for remote workers taking day trips outside the main Tokyo-Osaka corridor: Docomo's network is the undisputed rural king in Hokkaido, the Japanese Alps, and the countryside.

6. Jetpac: Best Perks

On top of their reliable and fairly priced eSIM packages, Jetpac stands out with perks that go above and beyond. With every eSIM, you’ll get airport Fast Pass lines, a free 30-day ExpressVPN trial, and airport lounge access if your flight gets delayed.

Be warned, you can only contact their customer service via WhatsApp between 12 PM and 7 AM (Japan Standard Time) or anytime via email for a response within 24 hours. Jetpac also doesn’t offer any unlimited plans, although 40GB across 30 days should have you covered.

7. Airalo: Best for Low Data Plans

Airalo is one of the most popular eSIM marketplaces in the world, and Japan is no exception. Their plans range from low data options of 1, 2, or 3GB up to 20GB across 30 days, all of which can be purchased and activated straight from the great and user-friendly app. Airalo is awesome for frequent eSIM buyers, as with every purchase, you’ll get 5% back in Airmoney to spend on your next Airalo eSIM.

Airalo now supports 5G speeds on the SoftBank and KDDI networks in major Japanese metropolitan areas. Note that their unlimited plans throttle speeds to 1 Mbps after 3 GB of data per day, so if heavy daily usage is your plan, a fixed-data option is the better choice.

8. Nomad: Best for Day Plans

Nomad is known for their ultra-flexible plans that have you covered from one to 45 days. Their day plans let you choose from between 500MB to 3GB of data refresh every day up to a week, with their lowest plan starting from as little as $2.50 for one day.

Digital Nomad Hotspot and Tethering: Which Plans Actually Work?

Connecting your phone to a local eSIM is easy. Connecting your laptop through your phone is where things get complicated. Many unlimited plans restrict hotspot (tethering) to protect their network. Here's the current breakdown for Japan eSIMs:

Bottom line for nomads: Holafly is great for solo phone browsing, but if you're working from a laptop even occasionally, go with Ubigi, Saily, or Jetpac for unrestricted tethering.

Key Features to Consider in an eSIM for Japan

Here are some of the things we looked for in creating this list of the best Japan eSIM providers, and that we think you need to know to look out for before making a final eSIM decision:

• Data Plans: Range from limited to unlimited data options
• Coverage: Ensure compatibility with major Japanese networks like NTT Docomo, KDDI, and SoftBank.
• Validity Period: Duration of the plan to match your stay
• Speed: Availability of 4G/5G speeds
• Customer Support: Accessibility and responsiveness
• Ease of Installation: User-friendly setup process with clear instructions

Japan eSIM FAQs

How do I check if my phone is eSIM compatible?

Most newer smartphones will be eSIM compatible, for instance, all Apple devices from the iPhone 11 onwards. To check if your Android phone is eSIM compatible, go to Settings → About Phone → SIM Status and look for an eSIM or 'Embedded SIM' mention. On Google Pixel phones, navigate to Settings → Network & Internet → press the ‘+’ → Connect to a Mobile Network, and look for a ‘Download a SIM instead?’ option.

Which eSIM is best in Japan?

We recommend eSIM Japan, however, the best eSIM for you will depend on your individual needs, such as data, budget, and validity period.

How to activate an eSIM on iPhone?

This will depend on the eSIM provider and iPhone model, but in many cases, you can navigate to Settings → Cellular → Add eSIM → Scan the QR code provided by the eSIM provider.

Can I get an eSIM for Japan?

Absolutely! There are many eSIM providers and options for getting coverage in Japan without needing a physical SIM card or a monthly cellular plan.

How to transfer eSIMs?

This will depend on your phone models and if eSIM transfer is allowed by your eSIM provider. For iPhone 16s or later iPhone models, go to Settings → Cellular → Add eSIM → Transfer from Nearby iPhone. Select the plan you would like to transfer and follow the onscreen instructions.

On Android devices, transferring an eSIM is only possible when setting up a new phone. When prompted, click Connect to a Mobile Network → Transfer SIM From Another Device → Next, and scan the QR code from your previous phone. Finally, click Connect & Transfer.

Ready to get connected and start traveling?