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Japan’s eSIM market is booming, and it’s no surprise — more travelers are turning to eSIMs for quick, reliable internet access. In fact, it’s expected to hit $322.1 million in revenue by 2030.
If you're planning to visit Japan — whether during cherry blossom season or another time of year — using an eSIM is one of the easiest ways to stay connected. With fast internet and wide 5G coverage in cities like Tokyo, Osaka, and Kyoto, it can save you time, money, and hassle.
An eSIM (embedded SIM) is a digital version of a physical SIM card. Instead of inserting a plastic chip, you scan an eSIM QR code or install a profile — no swapping cards or removing your home SIM.
It works the same way as a regular SIM, but setup takes just minutes, and you can activate it before your trip.
In Japan, eSIMs make it easy to stay online. Common use cases include:
Japan has some of the world’s fastest 4G and 5G networks, with strong coverage in both cities and towns. But free public Wi-Fi can be hard to find.
Having your own mobile data gives you the freedom to explore Japan’s unique culture — from historic temples to quirky discoveries like these Japan fun facts. You’ll get real-time navigation, instant translations, and easy access to travel info wherever you are.
Your ideal data plan depends on how you use your phone while traveling:
Japan has one of the most advanced mobile networks in the world, but choosing the right eSIM depends on your travel style and data needs.
Based on our research, here are the top eSIM providers for Japan.
Holafly is a top choice for travelers to Japan thanks to its unlimited data plans and quick, user-friendly setup. After purchase, your eSIM is delivered instantly via email, along with a QR code that you can either scan or install manually. Once you arrive in Japan, you simply activate the eSIM by turning on data roaming — no separate app required.
Their service connects you to major Japanese networks like KDDI, offering stable internet access in key destinations such as Tokyo, Kyoto, Osaka, Hiroshima, and Nagasaki. Speeds reach up to 5G depending on location and device, though Holafly notes that Fair Usage Policies may apply — meaning speeds could be reduced after heavy usage.
The eSIM is compatible with most smartphones that have eSIM capability, though Holafly doesn’t guarantee operation on tablets or smartwatches. If you’re unsure about your device, they offer a compatibility checker directly on their website.
Plans are customizable by duration, with options ranging from 1 to 90 days. While Holafly’s plans don’t include local phone numbers or SMS functionality, you can still make calls via apps (VOIP). For hotspot use, Holafly allows 500MB of data per day to be shared with other devices — a useful feature for traveling in pairs or groups.
Holafly’s 24/7 live chat support is another standout feature. Their customer service is known for being fast and helpful, especially useful if you encounter connectivity issues mid-trip.
Key features:
Data plans for Japan:
| Plan Duration | Price | Data |
| 5 Days | $20.90 | Unlimited |
| 10 Days | $36.90 | Unlimited |
| 15 Days | $50.90 | Unlimited |
| 20 Days | $61.90 | Unlimited |
| 30 Days | $74.90 | Unlimited |
Pros:
Cons:
Still on the fence about Holafly? Check out the video below to see how it performs when used abroad.
Rating: 4.5/5
Pricing: Starting at $4.50 for 1 GB (7 days)
Coverage: Available across Japan
Calls/SMS: Mostly offers data-only plans
Airalo is one of the most widely used eSIM marketplaces, offering affordable, pay-as-you-go plans through its own local eSIMs for Japan. It’s a popular choice among budget-conscious travelers who only need light to moderate data usage. With coverage throughout the country — from urban centers to more remote areas — Airalo provides reliable internet access while keeping costs low.
One of Airalo’s main advantages is its flexibility. You can choose plans based on how much data you need and how long you’re staying, with options ranging from 1 GB to 20 GB and durations between 7 and 30 days. This pay-per-GB model is ideal for short trips or users who want more control over their data usage.
Setting up the eSIM is easy. After purchasing a plan via the Airalo app or website, you’ll receive a QR code with step-by-step instructions. You can also install the eSIM directly through the app, which is helpful if you’re already traveling. Airalo offers customer support through both live chat and a ticket system, with generally responsive service.
Keep in mind that Airalo’s Japan eSIMs are for data only and do not include a local phone number. Tethering is supported, making it a solid option for travelers who want to share their data connection with other devices.
Key features:
Data plans for Japan
| Plan Duration | Price | Data |
| 15 Days | $6.50 | 2 GB |
| 30 Days | $8.50 | 3 GB |
| 30 Days | $11.50 | 5 GB |
| 30 Days | $18 | 10 GB |
| 30 Days | $26 | 20 GB |
Pros:
Cons:
3. Nomad
Rating: 4.3/5
Pricing: Starting at $6 for 1 GB (7 days)
Coverage: Nationwide in Japan
Calls/SMS: Data-only plans
Nomad is another strong option for travelers to Japan, especially if you prefer a clean, app-based experience and short-term, pay-as-you-go data plans. Nomad offers local Japan eSIMs powered by trusted Japanese networks like KDDI and SoftBank, giving you reliable speeds in both urban areas and less populated regions.
One of Nomad’s strengths is its competitive pricing and flexible plan sizes — you can choose from as little as 1 GB for light browsing to 50 GB for extended or heavy use. All Japan eSIMs are data-only, which means you won’t get a local phone number, but they do support tethering. This makes it easy to share your data with a laptop or another device while on the go.
Activating your eSIM is straightforward through Nomad’s mobile app. After selecting and purchasing a plan, installation can be done by scanning a QR code or through manual setup instructions provided in-app. Nomad’s interface is designed for ease of use, even if it’s your first time using an eSIM.
In terms of support, Nomad offers live chat both through its mobile app and website. You can reach customer service using the in-app chat on Android or iOS, or via the website chat feature. For the best experience, Nomad recommends enabling push notifications so you won’t miss responses from their support team. If you’re traveling across multiple countries, Nomad also provides regional and global plans — but their Japan-specific eSIMs typically offer the best value for domestic use.
Key features:
Data plans for Japan
| Plan Duration | Price | Data |
| 30 Days | $8 | 3 GB |
| 30 Days | $11.00 | 5 GB |
| 30 Days | $17.00 | 10 GB |
| 30 Days | $25.00 | 20 GB |
| 30 Days | $57.00 | 50 GB |
Pros:
Cons:
Rating: 4.2/5
Pricing: Starting at $3.99 for 1GB (7 days)
Coverage: Available in various cities across Japan
Calls/SMS: Data-only plans
Saily is an emerging eSIM provider offering unlimited data plans designed for international travelers who want simple, reliable connectivity without worrying about data limits. In Japan, Saily connects to local carriers like NTT Docomo, delivering fast and stable 3G, 4G, LTE, and 5G coverage across most urban and suburban areas.
Once you purchase a plan, the eSIM is delivered instantly and activates automatically when you arrive in Japan — as long as it’s already installed and data roaming is enabled. Setup is quick: you’ll receive a QR code or manual input details, and all management is done through the Saily app, making it beginner-friendly even for first-time eSIM users.
Plans are valid for either 7 or 30 days, and since Saily includes unlimited data, it’s a great option for travelers who stream, navigate, or work on the go. There are no hotspot restrictions, so you can tether your data freely if needed.
Customer support is available via in-app live chat and email, with generally quick response times during business hours. While Saily doesn’t offer local phone numbers or SMS, it's well-suited for travelers who use VoIP services like WhatsApp or FaceTime for communication.
Key features:
Data plans for Japan
| Plan Duration | Price | Data |
| 30 days | $7.99 | 3GB |
| 30 days | $10.99 | 5GB |
| 30 days | $17.99 | 10 GB |
| 30 days | $24.99 | 20GB |
| 15 days | $49.99 | Unlimited data |
Pros:
Cons:
Rating: 4.3/5
Pricing: Unlimited data plans start at $2.34 per day, with flexible durations of up to 180 days Coverage: Robust support across Japan
Calls/SMS: Data-only
Maya Mobile stands out for its transparent pricing, flexible data plans, and user-friendly setup process. For travelers heading to Japan, Maya ensures stable coverage in major cities and transit corridors, making it a reliable option for both short and extended stays.
Activation is managed through Maya’s website or dashboard. After choosing your plan, you can activate the eSIM by scanning a QR code or entering the details manually — no app installation is required, which simplifies the process for travelers who prefer a quick setup.
Maya offers live chat support through its website, along with 24/7 email support for additional help. The provider also features regional and global plans, which can be valuable if you're planning to visit multiple countries during your trip.
Key features:
Data plans for Japan:
| Plan Duration | Price | Data |
| up to 180 days | $5.39 | 1GB |
| up to 180 days | $7.19 | 3GB |
| up to 180 days | $10.79 | 5GB |
| up to 180 days | $17.09 | 10GB |
| up to 180 days | $24.29 | 20GB |
Pros:
Cons:
Rating: 4.0/5
Pricing: Starting at $4 for 1GB (1 day)
Coverage: Available in all regions of Japan
Calls/SMS: Data-only
Ubigi is known for offering a solid mix of short- and long-term eSIM plans across the globe. In Japan, Ubigi uses KDDI and NTT Docomo’s high-speed networks, delivering stable 4G and 5G service in major cities and many tourist destinations.
The Ubigi app is required for activation and account management. You can download it, select a plan, and either scan a QR code or install the eSIM directly through the app on compatible devices. Activation usually takes just a few minutes. The app also includes tools to top up data or monitor your usage.
Ubigi’s customer support is handled via email and contact forms, with help articles available in the app. While it lacks live chat, its setup guides and mobile interface are intuitive enough for most users to navigate without needing support.
Key features:
Data plans for Japan:
| Plan Duration | Price | Data |
| 30 days | $8 | 3GB |
| 30 days | $17 | 10 GB |
| 30 days | $34 | 25 GB |
| 30 days | $59 | 50 GB |
| 30 days | $69 | Unlimited |
Pros:
Cons:
Here’s a quick side-by-side comparison of the top eSIM providers for Japan.
| Provider | Validity | Unlimited data offering | Lowest price availability | Setup/App Requirement | |
| Holafly |  | 1-90 days | Yes | $6.90 (unlimited) | No app needed; QR code via email |
| Airalo |  | 7-30 days | No | $4.50 (1GB) | Optional app; QR code or in-app setup |
| Nomad |  | 7-30 days | No | $6 (1GB) | App required for purchase and activation |
| Saily |  | 7-30 days | Yes | $3.99 (1GB) | App required; QR code or manual setup |
| Maya Mobile |  | Up to 180 days | Yes | $2.34 (unlimited) | No app needed; activation via QR code or manual entry |
| Ubigi |  | 1-30 days | Yes | $4 (1GB) | App required for plan purchase and setup |
To find the most reliable eSIM options for Japan, we evaluated each provider based on several key criteria:
If you're visiting Japan, using an eSIM makes staying connected easier and more convenient than relying on pocket Wi-Fi or local SIM cards. Here are five reasons to consider a Japan-specific eSIM:
Not all smartphones support eSIMs, so it’s important to confirm compatibility before you buy a plan.
Most flagship models released in the last few years include eSIM functionality, but availability can vary depending on where the device was purchased and how it was manufactured (especially for Android).
Below are step-by-step instructions for checking eSIM compatibility on both iPhone and Android devices, plus tips on what to look for.
Step 1: Open your Settings
Step 2: Tap General > About
Step 3: Scroll down and look for Digital SIM or Available SIM
If your phone displays an EID (Embedded Identity Document) number, then it’s eSIM compatible. You can also check eSIM status by going to Settings > Cellular. If you see an “Add eSIM” or “Add Cellular Plan” option, your device supports eSIM activation.
Step 1: Open your Settings
Step 2: Tap About phone or search for SIM card status
Step 3: Look for any of the following:
You can also dial *#06# on your Android device — if your phone supports eSIM, the EID will show up along with your IMEI.
Note that some Android phones may support eSIM, but carriers in your region might block the feature — especially on models bought through specific retailers or network providers.
Ordering and activating an eSIM is simple, but timing matters. Most travelers buy their eSIM a few days before their trip so they have time to install it and review setup instructions. Many providers also allow you to schedule the activation date or trigger it manually once you arrive.
Step 1: Choose a provider. Compare eSIM plans based on data limits, price, and duratio
Step 2: Select your plan. Choose how much data you’ll need and how long you’ll stay
Step 3: Complete your purchase. Pay online using your credit card or PayPal.
Step 4: Receive the eSIM details. You’ll get a QR code via email or app, along with setup instructions.
Step 1: Go to Settings > Cellular > Add Cellular Plan
Step 2: Scan the QR code you received from the provider
Step 4: Follow the prompts to label your plan (e.g., "Travel") and choose when to activate it
Step 5: Enable data roaming once you land in Japan
Step 6: Switch to the eSIM as your active data line if prompted
If you're using a dual SIM iPhone, you can keep your regular number for calls and texts while using the eSIM for data.
Steps may vary slightly by brand, but the general process is:
Step 1: Go to Settings > Network & Internet > SIMs (or Mobile Network)
Step 2: Tap Add eSIM or Download a SIM instead
Step 3: Scan the QR code or enter the activation details manually
Step 4: Confirm and follow the prompts to install
Step 5: Turn on data roaming when you arrive
On some Android phones, you may need to restart your device before the eSIM activates fully.
Choosing the best eSIM for Japan depends on your travel style, data needs, and how much convenience you want. If you're on a short trip and just need a few gigabytes of data, providers like Airalo or Nomad offer flexible, budget-friendly plans. If you're staying longer or want unlimited data without worrying about usage limits, options like Holafly, Saily, or Maya Mobile are worth considering.
But if simplicity, reliability, and 24/7 support matter most, Holafly stands out as the top pick. With instant delivery, easy QR-code setup, and unlimited data connected to major Japanese networks, it’s one of the most hassle-free ways to stay online during your Japan trip.
Pro Tip: Try Holafly for your next visit to Japan and experience smooth, high-speed connectivity from the moment you land.
Holafly is the best eSIM for Japan if you want unlimited data, seamless activation, and reliable 24/7 support. For budget-friendly, pay-per-GB options, Airalo and Nomad are solid alternatives.
Yes, Japan supports both physical SIM cards and eSIMs. Most modern smartphones work with Japanese networks like NTT Docomo, KDDI, and SoftBank. Just make sure your phone is unlocked and compatible.
Yes, eSIMs are more convenient than pocket Wi-Fi. There's no need to carry extra devices, charge batteries, or worry about losing a router. You get instant mobile access right on your phone.
Most Japan eSIMs support hotspot use, but some providers limit it or charge extra. Holafly, for example, allows 500MB of hotspot data per day on unlimited plans.
You can install your eSIM before departure and activate it once you land in Japan. Some providers even let you schedule the activation date during checkout.
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Our mission is simple: to make sure you never have to ask, “What’s the WiFi password?” again. All our tips come straight from personal experience — because we’d never recommend something we haven’t put to the test ourselves.
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