5 Best eSIMs for Japan: Tourist Plans, Price, Roaming (2025)

What’s the best eSIM I can get for Japan? I tested the most popular options and picked the top 5, including Holiday and Saily. The eSIM market in Japan is booming — it’s expected to reach over $322 million by 2030¹, which is enough to buy every Japanese citizen a bowl of high-end ramen.

With so many eSIM options in Japan, choosing the right one can feel as overwhelming as navigating Shibuya Crossing at rush hour. But I’ve broken it all down by price, data allowance, and whether they’re better for short or long trips. Plus, if you’re planning to visit other Southeast Asian countries, I checked which ones offer regional coverage. Let’s find the perfect eSIM for your Japan adventure now!

Short on Time? Here Are the Best eSIMs for Japan in 2025

Best eSIMs for Japan in 2025

1. Holiday — Best Overall eSIM for Japan

Holiday.com, backed by a company under ExpressVPN, is a fantastic choice for staying connected in Japan. With a user-friendly app, flexible data plans, and reliable performance, it makes traveling stress-free. You can easily track your data, top up your plan, and reach 24/7 customer support — all from the app.

Setting up the Holiday eSIM is effortless. Just follow the installation prompts, and it automatically activates when you land in Japan. During my trip, I easily accessed Facebook and Instagram and enjoyed smooth browsing. It also supports 5G speeds and hotspot tethering, so you can stay connected across multiple devices without interruptions.

Pricing starts at just $3.50 for 1GB, making Holiday one of the most budget-friendly options. Plans go up to 20GB, which may not be enough for heavy data users, but the reliable performance and transparent pricing make up for it. Plus, there are no hidden fees, and you get a 14-day refund policy if the eSIM isn’t activated.

2. Saily — Easy-To-Use eSIM for Japan

Saily keeps things simple, making it a great choice if you don’t want to deal with complicated setups. I had no trouble securely accessing social media and banking services during my trip. Whether I was streaming in the heart of Tokyo or checking maps in Kyoto, everything ran smoothly.

With 5G speeds and hotspot tethering, you can share your data across multiple devices without a hitch. Developed by Nord Security, Saily also adds an extra layer of protection with built-in DNS filtering to block intrusive ads and help mask your virtual location for better privacy.

Pricing starts at $3.99 for 1GB, but you can lower the cost to $3.79 with the Mentor5 coupon. The downside? Saily’s eSIMs are data-only, so they don’t include voice calls or SMS. But if you need to make calls, apps like WhatsApp or Skype will do the trick.

3. Airalo — Great Local and Regional Plans

Airalo provides excellent coverage in Japan with its Moshi Moshi plans, which run on SoftBank and KDDI networks for reliable connectivity. You can start with a free 500MB plan (valid for 3 days) and upgrade to 1GB for just $4.50 if you need more data.

If you’re traveling beyond Japan, Airalo’s Asialink package covers 18 Southeast Asian countries, including China and South Korea, making it a solid choice for multi-country trips. You can also access TikTok, messaging apps, and social media platforms without restrictions, no matter where you go.

This eSIM is a bit pricier than the others, but the free data plan for Japan makes it worth considering. Plus, Airalo’s Airmoney loyalty program gives you cashback on every purchase, helping you save over time.

4. Airhub — Unlimited Data Plans for Japan

Airhub offers a variety of travel-friendly plans for Japan, including unlimited data options (for example, for 4 and 15 days). Whether you’re on a short trip or staying longer, there’s a plan to match your needs.

It provides strong coverage across Japan, even in remote areas — perfect for browsing TikTok without restrictions. While the setup is usually smooth, some users have experienced delays in receiving their QR code. That said, once it arrives, installation is quick and easy.

5. GigSky — Free Data on the Regional Plan

If you’re traveling to Japan, GigSky gives you 100MB of free data for 7 days, and you don’t even need a credit card to sign up. It’s a great way to try the service before committing to a paid plan. Plus, the free data isn’t just for Japan — it also applies to GigSky’s Asia Pacific regional plan.

The eSIM works well in big cities like Tokyo, Osaka, and Kyoto, but coverage can be less reliable in remote areas like Yakushima Island or the Japanese Alps. On the bright side, GigSky offers unlimited data plans for 7 and 15 days.

Quick Comparison Table: Best eSIM for Japan

Here’s a quick comparison table to help you decide which eSIM provider suits your needs in Japan. It covers essential details like starting prices and validity periods, giving you a clear picture of what to expect.

How to Choose an eSIM for Japan

Picking the right eSIM for Japan can make your trip smooth and avoid frustration. With so many options, it’s important to find one that fits your travel plans. Are you visiting for a few days or staying longer? Sticking to big cities or heading off the beaten path?

Thinking about these details will help you find the perfect eSIM. Here are some quick tips to make your decision easier:

• Check coverage. Make sure your eSIM works well in both big cities and rural areas like Hokkaido or Okinawa.
• Know your data needs. Light users can go for smaller plans, but if you stream or work online, look for higher data caps or unlimited options.
• Match the plan to your trip. Some eSIMs are great for short stays, while others cater to long-term travelers. Pick one that fits your schedule.
• Go regional if needed. Visiting other countries, too? Choose an eSIM that covers multiple Asian destinations so you don’t have to keep switching.
• Compare prices. Look at cost-per-GB rates and watch out for hidden fees or roaming charges.
• Check device compatibility. Make sure your phone supports eSIMs and works with the provider you choose.
• Go for an easy setup. Some eSIMs activate instantly with a QR code — perfect if you don’t want to deal with complicated setup steps.

Does Your Phone Support eSIM?

Before purchasing an eSIM for your trip to Japan, it’s crucial to confirm that your phone supports eSIM technology. Not all devices are equipped for eSIM, and knowing how to check can save you a lot of frustration. Here’s a quick guide to help you verify eSIM compatibility for iPhones and Android devices.

For iPhones

Apple introduced eSIM support, starting with the iPhone XS, XS Max, and XR. Newer models fully support eSIM functionality. Here’s how to check:

Step 1. Head to Settings and search for eSIM. If you see the Add eSIM option, tap it.

Step 2. Follow the prompts to scan a QR code and start setup. If the process begins, your iPhone supports eSIM.

iPhone 14 models sold in the US don’t have a physical SIM slot, so eSIM is the only available option

For Android Devices

Many Android phones, including those from Samsung, Google, and other top brands, support eSIM. Some popular eSIM-compatible Android devices include:

• Samsung Galaxy S20 and newer models
• Google Pixel 3 and newer models
• Oppo Find X3 Pro, OnePlus 10, and similar flagship devices

Here’s how to check if your phone is eSIM compatible:

Step 1. Head to Settings and search for eSIM. If you see the Add eSIM option, tap it.

Step 2. If you’re redirected to a setup page, your phone supports eSIM.

Some carriers, like Google Fi or My Verizon, may require dedicated apps to activate an eSIM

Once you’ve confirmed your phone supports eSIM, here are a few additional steps to ensure a smooth experience:

• Check with your carrier. Some mobile carriers may have restrictions on eSIM activation. If you’re using a carrier-locked phone, confirm whether it supports third-party eSIMs.
• Update your phone’s software. Running the latest OS ensures compatibility with newer eSIM features and providers.
• Understand dual SIM functionality. If your device supports it, you can use an eSIM alongside a physical SIM, which is great for keeping your home number active while using a local data plan.

How Can I Buy an eSIM for Japan?

Buying an eSIM for Japan is simple and can be done before your trip or after you arrive. Here’s a step-by-step guide to getting set up:

Step 1. Before making a purchase, confirm that your smartphone supports eSIM.

Step 2. Research eSIM providers that offer coverage in Japan. Compare plans based on data allowance, validity period, and price to find the best option for your trip.

Step 3. Purchase and receive your eSIM. Most eSIMs can be purchased online through the provider’s website or app. Once you complete the payment, you’ll receive a QR code or activation details via email.

Step 4. Install your eSIM. Follow your provider’s instructions to set up the eSIM. It usually takes just a few minutes.

• Open your phone’s Settings and go to Mobile/Cellular Settings.
• Tap Add Mobile Plan and scan the QR code you received.
• Confirm the plan and set the eSIM as your primary or secondary network, depending on your needs.

Step 5. Verify connectivity. If you installed the eSIM before arriving in Japan, it should activate automatically when you land and connect to a local network. If you purchased and installed it after arrival, check your internet connection immediately. Should any issues come up, the provider’s troubleshooting guide or customer support can help.

Is It Better to Get an eSIM or Physical SIM in Japan?

Choosing between an eSIM and a physical SIM for your trip to Japan depends on your travel needs and preferences. eSIMs are usually easier to use, but here’s a quick comparison to help you decide:

So, which one should you choose? Pick an eSIM if you want a hassle-free digital solution that you can set up before you arrive. It’s great for short trips and frequent travelers. Go with a physical SIM if you need a local phone number, are staying long-term, or have a phone that doesn’t support eSIM.

How to Stay Safe on Public WiFi in Japan

Free WiFi is everywhere in Japan — hotels, airports, cafes, and even train stations. While it’s great for saving eSIM data, public networks usually put your personal information at risk. Hackers can intercept your connection, steal your data, or launch phishing attacks.

Here’s how to protect yourself while using public WiFi in Japan:

• Use a VPN for security. Public WiFi is often unsecured, making it a target for hackers. The best VPNs for Japan encrypt your connection, keeping your data safe when browsing or making payments.
• Avoid accessing sensitive accounts. Don’t check your bank accounts or enter personal information while on public WiFi. If you must, always use a VPN to secure your connection.
• Disable automatic connections. Some devices automatically connect to open networks, which can be risky. Turn off this feature in your settings.
• Stick to HTTPS websites. Look for https:// in website URLs to ensure your data is encrypted. Avoid entering passwords on non-secure sites.
• Use a private browser. Secure browsers like Brave don’t store your history, cookies, or personal data. They also block trackers for extra privacy.
• Forget networks after use. Once you’re done, forget the WiFi network in your settings to prevent automatic reconnections later.
• Use your eSIM for sensitive tasks. If you’re logging into important accounts, consider using your eSIM data instead. It may cost a little more, but it’s far more secure.

FAQs on the Best eSIM for Japan

What is the cheapest eSIM card in Japan?

Holiday is one of the most affordable eSIMs for Japan. The plans start at just $3.50 for 1 GB of data. Another budget-friendly option is Airhub, which also offers unlimited data plans.

Can I make calls with an eSIM card in Japan?

Most eSIMs for Japan are data-only, meaning they don’t support traditional calls or SMS. However, you can still make calls using VoIP apps like WhatsApp, Skype, or FaceTime. If you need a local phone number for regular calls and texts, you may want to look into physical SIM cards or eSIM plans that include voice services. Be sure to check the details before purchasing to find the best option for your needs.

Which eSIM for Japan is best for an iPhone?

If you’re using an iPhone XS or newer, Holiday is a great option thanks to its fast speeds and easy setup through a user-friendly app. It’s designed to work seamlessly with eSIM-compatible iPhones, so you can activate it quickly and stay connected without hassle. Before purchasing, double-check that your iPhone supports eSIM and choose a provider known for reliable coverage and smooth activation.

How much data do I need for 2 weeks in Japan?

It depends on how you use your phone — for light browsing, messaging, and occasional navigation, 5 to 10 GB should be enough. But if you stream videos, use maps frequently, or work online, you might need a more extensive plan or even unlimited data to avoid running out mid-trip. Consider your habits and choose a plan that keeps you connected without worry.

Can I activate my eSIM before arriving in Japan?

Yes, most eSIM providers let you set everything up before your trip. Just scan the QR code and follow the instructions. This way, it will be ready to connect as soon as you land.

Do Japan eSIMs work in rural areas like Hokkaido?

Yes, Japan eSIMs can work in rural areas like Hokkaido, but performance varies significantly by provider and network infrastructure. For example, Airalo uses KDDI networks, and it has reported success in remote Hokkaido.

Which eSIM providers offer unlimited data in Japan?

If you need unlimited data in Japan, Airhub is a great option, perfect for heavy users who don’t want to worry about limits. GigSky is another provider to consider. Be sure to compare plans based on your budget and data needs to find the best fit.

Can I make emergency calls with a Japan eSIM?

Yes, eSIMs for Japan usually let you call 110 (police) or 119 (ambulance/fire) as long as your phone detects a network. However, data-only eSIMs have limitations — emergency services can’t call you back, and some providers don’t support emergency calls at all.

For the most reliable access, especially in rural areas or during disasters, a voice-enabled eSIM with a Japanese number is the safest choice. If using a data-only eSIM, check with your provider and keep a backup SIM if possible.

How do I switch between eSIMs if one isn’t working?

Switching between eSIMs is simple — just go to your phone’s mobile settings and select the eSIM you want to activate. You can keep multiple eSIMs installed and toggle between them as needed. Ensure you’re familiar with your device’s eSIM management features, and consider having a backup plan ready.

Can I share my eSIM data through a hotspot in Japan?

Yes, most eSIMs, including those from Holiday and Saily, support tethering, allowing you to share your data with other devices. This is a great way to save costs when traveling with others. However, if you plan to use personal hotspots frequently, be mindful of your data limits and choose a provider that offers sufficient allowances.

Conclusion

If you’re traveling to Japan, an eSIM is a hassle-free way to stay connected without dealing with physical SIM cards. It offers easy activation, secure internet access, and the flexibility to switch providers as needed.

However, not all eSIMs are the same — some offer better pricing and more data allowance than others. To get the best deal, compare plans based on your trip length, data needs, and any extra features you might need. With the providers I’ve covered, finding the right eSIM for Japan should be simple and stress-free.

References:

1. https://www.grandviewresearch.com/horizon/outlook/esim-market/japan
2. https://www.bbc.com/news/technology-54692179
3. https://www.statista.com/statistics/892503/japan-mobile-phone-market-subscription-share-by-operator/