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Best eSIMs for Japan in 2025: Comparison, Prices, and Recommendations

Traveling to Japan in 2025? Staying connected is simple with top eSIM providers like Holafly, Airalo, Nomad, Saily, Maya Mobile, and Ubigi. Whether you need unlimited data from Holafly, budget-friendly plans from Airalo and Nomad, privacy-focused browsing with Saily, multi-country flexibility from Maya Mobile, or strong nationwide coverage from Ubigi, these eSIMs let you stay online seamlessly across Japan no matter where you are.

Vukasin Petrovic Headshot

Written by Vukasin Petrovic

Updated: Oct 17, 2025
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Roami was founded to serve as a trusted resource for travelers in need of reliable internet solutions abroad. Our team, comprising avid travelers, provides comprehensive reviews and guidance on data SIM cards, eSIMs, pocket WiFi devices, and free WiFi apps, drawing from firsthand usage during our travels.

The 5 Best eSIM Providers for Travel

1
Holafly unlimited data plans in popular destinations, ideal for seamless travel
2
Ubigi reliable high-speed eSIMs in 190+ countries, great for business or frequent travel
3
Nomad flexible pay-as-you-go data for easy trave
4
BNESIM custom data and call bundles for long-term travelers
5
Airalo affordable eSIM options and solid value for most travelers

Japan’s mobile networks are fast and reliable, but differences in pricing, data limits, and activation methods can make choosing the right eSIM tricky. In this article, we review Holafly, Airalo, Nomad, Saily, Maya Mobile, and Ubigi, comparing coverage across major cities, data performance, plan costs, and setup ease. From navigating Tokyo’s subway system to streaming videos in Kyoto, these eSIMs offer practical ways to stay connected without worrying about roaming or unpredictable Wi-Fi.

Note *All pricing information in this article is accurate as of October 9, 2025. Prices are subject to change at any time, so we recommend checking directly with each eSIM provider for the most up-to-date details before making a purchase.*

Japan eSIM Prices and Data Plans

When traveling to Japan, picking the right eSIM ensures seamless connectivity without high roaming charges. Options range from unlimited data plans to budget-friendly packages with varying allowances. Below is a comparison of six top eSIM providers, showing pricing, data, features, and who each plan is best for.

ProviderPrice (starts from)Data includedFeaturesBest for
Holafly$6.90UnlimitedNo SIM swap, instant activation, 16-country coverageHeavy data users seeking simplicity
Airalo$4.001GB for 3 daysRegional coverage, 7–30 days validityBudget travelers with short stays
Nomad$6.001GB for 7 daysFlexible plans, 3–365 days validityLong-term travelers needing flexibility
Saily$5.001GB for 7 dayBuilt-in security features, 19-country coveragePrivacy-conscious users
Maya Mobile$3.59Unlimited for 1 dayMulti-country coverage, easy top-up optionsTravelers visiting multiple countries
Ubigi$3.501GB for 3 daysWide coverage, competitive pricing, easy setup availableUsers seeking reliable connectivity

Best 6 eSIMs for Japan

Japan offers a variety of eSIM options designed for different types of travelers. Some focus on unlimited data for heavy users, others provide budget-friendly packages for short stays, and a few prioritize security or multi-country coverage. In this section, we compare the top choices, highlighting key features, plans, and which types of travelers each is best suited for.

1. Holafly: Best for Unlimited Data

Holafly offers unlimited data plans for Japan, allowing travelers to stay connected throughout their trip without worrying about data limits, throttling, or extra charges.

In Japan, Holafly provides coverage through major networks like SoftBank and KDDI, delivering fast 4G/5G speeds across cities and popular tourist destinations. Activation is simple, with eSIMs delivered instantly via QR code.

Plan/DurationDataPrice
5 - day planunlimited19.50$
10 - day planunlimited36.90$
15 - day planunlimited50.90$
20 - day planunlimited61.89$
30 - day planunlimited74.90$

Key features:

  • Unlimited data plans with flexible durations
  • Instant eSIM delivery with QR code setup
  • Connects to major Japanese networks like KDDI for reliable 4G/5G
  • 500MB/day hotspot allowance for shared use
  • 24/7 live chat support
  • Compatible with most eSIM-ready smartphones

Pros:

  • Offers unlimited data
  • Excellent customer support
  • Easy QR-code setup

Cons:

  • Hotspot use is limited to select plans
  • Slightly more expensive than pay-per-GB options

Verdict: Holafly is perfect for travelers who need unlimited data without worrying about caps. While it comes at a premium price, the convenience and reliability make it ideal for heavy data users.

2. Airalo: Best for Budget-Friendly Options

Airalo provides affordable eSIM plans for Japan, giving travelers cost-effective connectivity without sacrificing coverage or reliability.

Airalo offers coverage in Japan via the Asialink network, delivering stable 4G connectivity in major cities. Activation is user-friendly through the Airalo app, allowing travelers to manage plans easily.

Plan/DurationDataPrice
3 - day plan1GB4.00$
7 - day plan3GB8.00$
15 - day plan5GB10.50$
30 - day plan5GB11.00$
30 - day plan10GB18.00$
30 - day plan20GB25.00$
10 - day planunlimited35.00$
30 - day planunlimited74.00$

Key features:

  • Affordable pay-per-GB plans starting at $4.50
  • Coverage across Japan, including remote areas
  • Easy in-app installation and QR code activation
  • Great for light to moderate users
  • App-based customer support with live chat and ticketing

Pros:

  • Great for light users
  • Easy app-based management

Cons:

  • No unlimited data plans
  • Customer support availability may vary depending on your location and time zone

Verdict: Airalo is ideal for travelers on a budget who want reliable data connectivity for short to medium stays. It may not provide unlimited data, but affordability and ease of use make it a solid choice.

3. Nomad: Best for Flexible Plans

Nomad offers flexible eSIM plans for Japan, giving travelers freedom to choose data amounts and durations for both short trips and long-term stays while enjoying consistent 4G/5G speeds.

Nomad provides coverage through major Japanese networks, ensuring consistent connectivity. Activation is seamless via the Nomad app, allowing easy plan management.

Plan/DurationDataPrice
30 - day plan3GB8.00$
30 - day plan5GB11.00$
30 - day plan10GB17.00$
45 - day plan20GB25.00$
45- day plan50GB57.00$
7 - day planunlimited23.00$
10 - day planunlimited31.00$

Key features:

  • Competitive pricing with plan sizes from 1GB to 50GB
  • App-based setup and account management
  • Reliable coverage via KDDI and SoftBank networks
  • Tethering supported for use with laptops or other devices
  • Clean, user-friendly interface ideal for first-time eSIM users
  • Live chat support via app and website

Pros:

  • Clean, user-friendly mobile app
  • Supports tethering

Cons:

  • Data-only (no phone number or SMS)
  • No unlimited data option


Verdict: Nomad is ideal for travelers who need flexible data plans that can adapt to varying trip lengths and usage. Its range of options ensures a plan for almost every traveler.

4. Saily: Best for Security Features

Saily, backed by Nord Security, offers eSIM plans for Japan with built-in VPN and privacy protections, perfect for travelers who want secure internet access on the go.

Saily provides coverage through major networks, ensuring secure 4G/5G connectivity. Activation is simple via the Saily app, which also manages plans and security features.

Plan/DurationDataPrice
30 - day plan3GB7.99$
30 - day plan5GB10.99$
30 - day plan10GB17.99$
30 - day plan20GB24.99$
15 - day planunlimited48.99$

Key features:

  • Unlimited data option available for up to 15 days
  • Quick activation with QR code or manual input
  • Reliable speeds using NTT Docomo and other local networks
  • No hotspot restrictions — full tethering allowed
  • In-app chat and email support available

Pros:

  • Affordable plans for short trips
  • Reliable connectivity through Japanese local networks

Cons:

  • No call or SMS options
  • Short validity periods for some plans

Verdict: Saily is best for travelers prioritizing online security and privacy. While voice is not included, its VPN and privacy features make it ideal for tech-savvy users.

5. Maya Mobile: Best for Multi-Country Coverage

Maya Mobile provides eSIM plans for Japan with multi-country coverage, ideal for travelers exploring multiple countries while keeping a single, convenient data plan.

Maya Mobile offers coverage through major networks, ensuring reliable 4G/5G speeds in Japan. Activation via the Maya Mobile app allows easy plan management across multiple countries.

Plan/DurationDataPrice
5 - day plan3GB4.99$
5 - day plan5GB7.99$
5 - day plan10GB14.99$
5 - day plan20GB24.99$
5 - day plan50GB45.99$
5 - day planUnlimited17.99$


*Note: The plan can last up to 180 days

Key features:

  • Flexible durations up to 180 days with competitive pricing
  • No app required: activate via QR code or manual setup
  • Strong coverage across major Japanese cities and transit routes
  • Offers regional and global plans for multi-country travel
  • 24/7 email support plus live chat via website
  • Great option for light to moderate data users

Pros:

  • Budget-friendly plans for light to moderate use
  • Straightforward setup process without an app

Cons:

  • Data-only (no voice or SMS)
  • Limited long-term data options

Verdict: Maya Mobile is perfect for travelers visiting multiple countries. Its multi-country coverage and flexible plans make it a convenient option for international journeys.

6. Ubigi: Best for Reliable Coverage

Ubigi offers eSIM plans for Japan with extensive nationwide coverage and stable speeds, ideal for travelers who want dependable connectivity in both cities and rural areas.

Ubigi provides coverage through major networks, delivering consistent 4G/5G speeds. Activation is simple via QR code, and the Smartstart feature ensures the eSIM works immediately.

Plan/DurationDataPrice
3 - day plan1GB3.50$
15 - day plan3GB8.00$
30 - day plan10GB17.00$
30 - day plan25GB32.00$
30 - day plan50GB55.00$
30 - day planunlimited66.00$

Key features:

  • Plans from 1GB to unlimited, suitable for short or long stays
  • Uses KDDI and NTT Docomo networks for strong nationwide coverage
  • Activation and usage tracking through Ubigi’s mobile app
  • Built-in top-up and data monitoring features
  • Solid connectivity in cities and tourist areas
  • App required for purchase and installation

Pros:

  • User-friendly app with live data usage tracking
  • Wide global coverage with consistent Japan connectivity

Cons:

  • No calling or SMS support
  • Requires app installation for purchase and setup

Verdict: Ubigi is perfect for travelers who need dependable connectivity across Japan. While voice is not included, its reliability and ease of setup make it an excellent choice.

Why you need an eSIM in Japan

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:

  • Navigation and transit: Use Google Maps or local apps for real-time train routes and transfers.
  • Language translation: Apps like Google Translate or Waygo help decode signs and menus.
  • Mobile payments: Many vending machines, taxis, and stores accept payment apps that need data.
  • Staying connected: Message friends or call hotels via WhatsApp, LINE, or FaceTime on the go.
  • Local internet realities: Japan has excellent 4G and 5G networks, but SIM registration can be strict, and physical SIMs for tourists may be limited. Public Wi-Fi is available but often slow or requires repeated logins.
  • Why roaming or Wi-Fi fall short: Roaming is costly with limited data, while free Wi-Fi can be unreliable or restricted to users with Japanese phone numbers.
  • How eSIM (and VPN where relevant) helps: eSIMs let you connect instantly on arrival, avoid roaming fees, and enjoy fast local data. Some providers include VPN access for secure browsing and streaming.

Where and how to buy an eSIM for Japan

Online before your trip:
The easiest and fastest way to get connected in Japan is by buying your eSIM online before departure. Global providers like Holafly (unlimited data and instant setup), Airalo (budget-friendly with flexible plans), Nomad (multi-network reliability), Saily (simple app-based purchase), Maya Mobile (quick activation and clear pricing), and Ubigi (strong coverage and travel bundles) all support Japan. You can activate your plan in minutes without visiting a store or showing ID.

On arrival (local carriers):
If you prefer to buy in Japan, carriers such as NTT Docomo, SoftBank, and au by KDDI offer prepaid eSIMs at airports and major electronics stores. You’ll usually need to present a passport for verification, and some staff may have limited English support. Availability differs by location, and setup can take more time than online options.

Pro tip:
Why online is simplest: Buying an eSIM before your trip saves time, avoids language barriers, and ensures you are connected as soon as you land. Always save your QR code or activation details offline since you’ll need internet access to download the eSIM profile.

How to activate an eSIM for Japan

Activating an eSIM for Japan is quick and straightforward. Follow these steps to get online in minutes:

How to activate an eSIM on iPhone

  • Step 1: Go to Settings > Cellular > Add Cellular Plan
  • Step 2: Scan the QR code you received from the provider
  • Step 3: Follow the prompts to label your plan (e.g., "Travel") and choose when to activate it
  • Step 4: Enable data roaming once you land in Japan
  • Step 5: 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.

How to activate an eSIM on Android

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.

Country-specific note: If you plan to use a VPN, install and test it before arriving in Japan to ensure it works with your eSIM.

Dual-SIM tip: Keep your home SIM active for calls and SMS, and use the eSIM for mobile data only.

 How do I know if my device is eSIM-compatible

Not all smartphones support eSIMs, so it is 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.

How to check if your iPhone supports eSIM

  • 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 is 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.

How to check if your Android phone supports eSIM

  • Step 1: Open your Settings
  • Step 2: Tap About phone or search for SIM card status
  • Step 3: Look for any of the following:
  • "eSIM" or "Digital SIM" listed under SIM card info
  • A visible EID number
  • An option to Add eSIM under your Mobile Network settings

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.

Insider tips for your Japan eSIM

Staying connected in Japan is easy if you follow a few practical strategies for using your eSIM effectively.

  • Install before you travel: Set up your eSIM at home so you are ready to connect immediately upon arrival.
  • Use the provider’s app: Manage your data, check balances, and access customer support through the official app.
  • Delayed activation if available: Some eSIMs let you schedule activation for your arrival date to maximize data usage.
  • Enable data-saving features: Turn on Wi-Fi assist, background app restrictions, and low-data modes to stretch your plan.
  • Install VPN before arrival: If your provider includes a VPN, set it up in advance to ensure secure browsing and access to apps.
  • Check device compatibility: Confirm your smartphone fully supports eSIM activation and dual SIM usage.
  • Be aware of hotspot limits: Some eSIM plans restrict tethering or hotspot use, so check before sharing data.
  • Watch for common pitfalls: Avoid exceeding data limits, forgetting to select the eSIM for mobile data, or neglecting offline backup of your QR code.

eSIM vs. physical SIM card in Japan

When traveling to Japan, choosing between an eSIM and a physical SIM can affect convenience, cost, and connectivity. eSIMs offer instant setup and easy management, while physical SIM cards often require in-person registration and extra steps to get online.

eSIM AdvantagesPhysical SIM Drawbacks
Can be installed before departureRequires passport or ID for registration
Works immediately upon arrivalMust visit a store in person
Supports dual-SIM devicesStaff may have limited English support
Clear prepaid plans with no hidden feesPayment options can be limited
Optional VPN access for secure browsingYou must swap SIM cards on your device
Manage data via provider appApps that are blocked in Japan remain blocked

How we chose the best eSIMs for Japan

To find the most reliable eSIM options for Japan, we evaluated each provider based on several key criteria:

  • Nationwide coverage:  We prioritized providers that use top Japanese networks like NTT Docomo, KDDI, and SoftBank to ensure strong signal strength in cities and tourist areas. Coverage and reliability was also evaluated, checking network strength and consistency across Japan.
  • Flexible pricing and plans: We looked for a mix of short-term and long-term options, including pay-per-GB plans and unlimited data offers to suit different travel needs and budgets. Plans and pricing, including cost per GB, were compared for affordability.
  • Ease of setup: We considered how easy it is to activate the eSIM through an app, QR code, or manual installation, especially for first-time users. Setup ease was reviewed to ensure simple installation and activation.
  • Plan value: Providers with competitive rates, transparent data limits, and minimal restrictions, such as hotspot usage, scored higher. Firewall and VPN access was considered to check secure browsing and bypassing restrictions.
  • User support: 24/7 or in-app customer support was a plus for travelers needing quick help while abroad.
     
  • Support and refunds were reviewed for availability and policy clarity.
  • Device compatibility was confirmed for smartphones and dual-SIM setups.
  • Real-world reviews and tests were considered to assess performance in practical use.

Verdict: What is the best eSIM for Japan?

Choosing the right eSIM for Japan depends on your travel style, data needs, and desired convenience. Some travelers need unlimited data for heavy usage, others want budget-friendly short-term options, while some prioritize multi-network coverage or privacy features. The following quick recommendations help match your plan to your needs while staying connected across Japan.

  • Unlimited / heavy users → Holafly for uninterrupted high-speed data throughout Japan.
  • Budget / short trips → Airalo or Nomad for affordable, flexible short-term plans.
  • Multi-network / flexibility → Nomad for reliable coverage across different Japanese networks.
  • Privacy / VPN-first → Saily for built-in VPN support and secure browsing.

When is the best time to visit Japan. Learn the ideal seasons and travel tips for exploring the country.

Best eSIM for Japan FAQ

Which eSIM is best for Japan?

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.

Can you use an eSIM in Japan?

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.

Is eSIM better than pocket Wi-Fi in Japan?


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.

Can I use my eSIM as a hotspot in Japan?

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.

When should I activate my eSIM for Japan?

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.

Vukasin Petrovic is an experienced content specialist and copywriter with expertise in digital marketing, on-page SEO, and inbound lead generation. With a degree in English and a master's in creative writing, he creates compelling content that delivers measurable results for businesses.

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