Best eSIM for Japan in 2025
Our in-house expert researchers and journalists conduct independent, unbiased testing of eSIM services, assessing their real-life effectiveness and usability.
By staying current with industry developments and openly sharing our transparent testing methodologies, we ensure readers receive accurate, up-to-date insights so they can make informed choices about eSIM solutions.
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For those planning a trip to Japan, an eSIM can make all the difference. Instead of purchasing a physical SIM card when you land and risk overpaying or even being scammed, simply download an app and activate an eSIM with one click.
eSIMs are virtual SIM cards that are mainly used for data across borders. Choose from a fixed local, regional, or even global plan and top up when needed. Some eSIMs also include a phone number you can use for calls and SMS while in Japan.
I collaborated with the research team and tested a variety of eSIM providers to find the best eSIMs for Japan. Read on to find an overview of each eSIM and its data plans in Japan, activation process, and customer support.
5 best eSIM providers for Japan – my recommendations
- Saily – best overall eSIM for Japan in 2025
- Airalo – reliable eSIM for Japan with an affordable price tag
- JetPac – cheapest eSIM for Japan
- Ubigi – up to 50GB eSIM in Japan
- aloSIM – eSIM for Japan with a phone number
The best eSIMs for Japan – detailed list
I collaborated with the Cybernews research team and analyzed many eSIM providers for Japan. I evaluated their data plans and pricing, activation, and regional coverage. Below, you’ll find an overview of each eSIM for Japan.
1. Saily – best eSIM for Japan in 2025
| Rating | |
| Countries and regions: | 200+ |
| Supports 5G networks: | Yes |
| Local/regional plans: | Yes |
| Starting price: | $3.79 |
Saily is my favorite eSIM for Japan because, based on my tests, it’s affordable, fast, and easy to activate. Best of all, you get more than just an eSIM, Saily includes an ad blocker, web protection, and even lets you change your virtual location. It’s developed by the same team behind NordVPN, so you can rest assured that security and privacy are the top priority.
Plan options. Saily eSIM offers flexible plans for different travelers, both short term or long term. You can choose between country-specific or regional plans, making it an excellent choice for those traveling to multiple destinations.
Japan plans pricing. If you’re in Japan for a short stay, Saily’s 7-day plan includes 1GB of data for just $3.79. For longer trips, there are 30-day plans with 3GB, 5GB, 10GB, or 20GB of data to stay connected throughout your journey. You can also opt for an unlimited data plan that’s valid for up to 30 days.
| Japan eSIM data plan | Duration | Price |
| 1GB | 7 days | $3.79 |
| 3GB | 30 days | $7.59 |
| 5GB | 30 days | $10.44 |
| 10GB | 30 days | $17.09 |
| 20GB | 30 days | $23.74 |
| Unlimited | 10 days | $34.19 |
Disclaimer: Prices displayed herein are approximate examples only. Please check exact prices and terms and conditions on the official website before making a purchase.
Network coverage. Saily provides strong and stable connectivity in Japan thanks to partnering with top-tier local carriers, offering seamless internet coverage across bigger cities and rural areas. This also means high-speed internet with consistent performance.
Activation process. Setting up Saily eSIM is quick and hassle free. Simply download the Saily app, purchase your preferred plan, and install the eSIM on your device. The intuitive app guides you, making it accessible even for first-time eSIM users.
Customer support. If you ever need help, Saily’s 24/7 customer support team is ready to help. Whether it’s about installation, network issues, or plan upgrades, you can get instant support via the app.
2. Airalo – cheap and reliable eSIM for Japan
| Rating: | |
| Countries and regions: | 200 |
| Supports 5G networks: | No |
| Local/regional plans: | Yes |
| Starting price: | $4.50 |
Airalo is another great eSIM for Japan. It perfectly balances affordability with performance, providing a reliable service across Japan – both in major cities like Tokyo and Osaka as well as rural areas. Airalo is also great for privacy-conscious users as it doesn’t require identification to set up in Japan.
Plan options. Airalo offers flexible eSIM data plans with no contracts – a perfect option for occasional travelers. You can choose from short-term and long-term plans, all providing fast and reliable connectivity. If you’re traveling beyond Japan, Airalo also has regional plans covering Korea and over a dozen other Asian countries, as well as global plans for 200+ destinations. For those unsure about which plan to choose, Airalo offers a 1-day 1GB Free Welcome eSIM plan to help you get started on your journey.
Japan plans pricing. Airalo’s local Japan eSIM includes six data options: 1GB, 2GB, 3GB, 5GB, 10GB, and 20GB for 7, 15, or 30 days. The cheapest plan is $4.50 for 1GB over 7 days. If you need a longer-term solution, more extensive plans provide more flexibility. Note that Airalo’s Japan eSIM does not include a phone number, but you can get the Discover+ global eSIM, which supports both calls and SMS.
| Japan eSIM data plan | Duration | Price |
| 1GB | 7 days | $4.50 |
| 2GB | 15 days | $6.50 |
| 3GB | 30 days | $8.50 |
| 5GB | 30 days | $11.50 |
| 10GB | 30 days | $18.00 |
| 20GB | 30 days | $26.00 |
Disclaimer: Prices displayed herein are approximate examples only. Please check exact prices and terms and conditions on the official website before making a purchase.
Network coverage. Airalo connects to Japan’s top mobile carriers, delivering strong network reliability and high-speed internet across urban and rural areas. This ensures a stable connection for browsing, navigation, and streaming wherever you go.
Activation process. Setting up Airalo is quick and straightforward. After purchasing a plan, simply scan the QR code or install the eSIM via the Airalo app. The eSIM automatically activates when connected to a supported Japanese network, so you can set it up before arriving in Japan.
Customer support. Airalo provides 24/7 customer support via the Airalo app, email, and live chat. If you experience connectivity issues or need assistance with setup, their responsive team is available to help.
3. JetPac – budget-friendly eSIM for Japan
| Rating: | |
| Countries and regions: | 200+ |
| Supports 5G networks: | Yes |
| Local/regional plans: | Yes |
| Starting price: | $1.00 |
Jetpac is one of the cheapest eSIMs for Japan. Even though it’s a budget-friendly service, Jetpac doesn’t compromise on quality – you’ll be able to browse and stream without any drops in speed. Plus, the setup is quick and straightforward, and doesn’t require identification.
Plan options. JetPac prepared a variety of eSIM plans with various travel needs in mind. You can choose from local, regional, and global plans. With nine different local data plans for Japan, JetPac provides flexible options to match any travel duration or data requirement.
Japan plans pricing. JetPac’s local eSIM plans range from 1GB to 50GB with 4, 7, 10, or 30-day validity periods. The most affordable plan costs just $1.00 for 1GB over 4 days, making it a superb budget-friendly option for short stays in Japan. While JetPac doesn’t include a phone number for calls and texts, its eSIM remains valid for one year so that you can buy it in advance for your trip.
| Japan eSIM data plan | Duration | Price |
| 1GB | 4 days | $1.00 |
| 3GB | 7 days | $6.00 |
| 5GB | 30 days | $9.00 |
| 10GB | 30 days | $15.00 |
| 15GB | 30 days | $17.00 |
| 20GB | 30 days | $23.00 |
| 30GB | 30 days | $29.00 |
| 40GB | 30 days | $46.00 |
| 50GB | 10 days | $30.00 |
| Unlimited | 7 days | $24.99 |
| Unlimited | 10 days | $29.99 |
Disclaimer: Prices displayed herein are approximate examples only. Please check exact prices and terms and conditions on the official website before making a purchase.
Network coverage. JetPac connects to Japan’s top mobile networks, ensuring strong and reliable coverage in urban areas and popular tourist spots. The service maintains stable speeds, making it a great option for browsing, messaging, and navigating throughout your stay.
Activation process. You can install and activate your JetPac eSIM before traveling, but it won’t work until you connect to a Japanese network. This way, you can set everything up beforehand and be ready as soon as you land.
Customer support. JetPac provides customer assistance through its online platform, offering guides and valuable resources. Live support options are limited, but with a straightforward activation process and flexible validity, it is still a valid, easy-to-use choice for budget-friendly traveling.
4. Ubigi – eSIM for Japan with loads of data
| Rating: | |
| Countries and regions: | 200+ |
| Supports 5G networks: | Yes |
| Local/regional plans: | Yes |
| Starting price: | $3.50 |
Ubigi is ideal for those who need loads of data when traveling in Japan. It’s slightly more expensive than Saily or Airalo, but has a greater variety of data plans ranging from 1GB to 50GB. There are also a few unlimited data plans for different time periods, but they’re quite pricey.
Plan options. Ubigi has a variety of plans, including local, regional, and global options. You can choose a Japan-only plan or one of the Asia, Best Asia, or World regional plans – perfect for those traveling beyond Japan.
Japan plans pricing. Ubigi’s Japan eSIM plans start at just $3.50 and include data options of 1GB, 3GB, 10GB, 25GB, 50GB, and unlimited data. Validity periods are 7,15, or 30 days. All that allows for much flexibility based on your travel needs. There are also monthly and annual plans for those staying in Japan longer. However, Jetpac is probably not the best option for long-term stays since it doesn’t include a phone number.
| Japan eSIM data plan | Duration | Price |
| 1GB | 3 days | $3.50 |
| 1GB | 30 days | $4.00 |
| 3GB | 15 days | $8.00 |
| 5GB | 15 days | $12.00 |
| 10GB | 7 days | $14.00 |
| 10GB | 30 days | $17.00 |
| 20GB | 30 days | $30.00 |
| 25GB | 30 days | $34.00 |
| 50GB | 30 days | $59.00 |
| Unlimited | 7 days | $26.00 |
| Unlimited | 30 days | $69.00 |
Disclaimer: Prices displayed herein are approximate examples only. Please check exact prices and terms and conditions on the official website before making a purchase.
Network coverage. Ubigi provides 5G connectivity where available so that you can count on fast and stable internet speed in many places across Japan, both in cities and rural areas.
Activation process. Getting started with Ubigi is quick and hassle free. Simply download its app, purchase a plan, and install the eSIM – the activation is instant, and no KYC verification is required.
Customer support. Ubigi offers customer support via live chat and email, though response times may vary. While help is available, it may not be as immediate as some competitors.
5. aloSIM – eSIM for Japan with an international phone number
| Rating: | |
| Countries and regions: | 200+ |
| Supports 5G networks: | Yes |
| Local/regional plans: | Yes |
| Starting price: | $4.50 |
AloSIM is my top recommendation for travellers who need a phone number to use in Japan. All of its eSIM plans for Japan include a phone number (collaboration with Hushed) which can be used for calls and SMS. Surprisingly, it does this while maintaining affordable prices and delivering stable speeds.
Plan options. aloSIM offers seven local data plans for Japan, ranging from 1GB to unlimited data, with 7, 10, 15, and 30 days validity options. Besides its Japan-specific plans, aloSIM also provides regional options, covering 13 Asian countries.
Japan plans pricing. aloSIM’s most affordable plan costs $4.50 for 1GB of data for 7 days. If you prefer flexibility, you can choose from more extensive plans, 2GB, 3GB, 5GB, 10GB, and 20GB, or unlimited data. One of aloSIM’s greatest advantages is a phone number, which allows for 30 minutes of calling and 50 texts. Additional calls and SMS can be purchased. However, they require another app, Hushed, which can be a bit of a hassle.
| Japan eSIM data plan | Duration | Price |
| 1GB | 7 days | $4.50 |
| 2GB | 15 days | $6.50 |
| 3GB | 30 days | $8.50 |
| 5GB | 30 days | $11.50 |
| 10GB | 30 days | $18.00 |
| 20GB | 30 days | $26.00 |
| Unlimited | 10 days | $35.00 |
Disclaimer: Prices displayed herein are approximate examples only. Please check exact prices and terms and conditions on the official website before making a purchase.
Network coverage. aloSIM ensures fast browsing speeds and stable connectivity across Japan. For you, it means seamless internet access, calls, and texts. Its network partners provide reliable coverage in bigger cities and tourist destinations.
Activation process. Setting up aloSIM is simple and quick. Once you purchase your preferred plan, you can install and activate eSIM directly through the aloSIM app. Calls and texts require the Hushed app.
Customer support. alsoSIM offers customer support via email and in-app chat. While response times may vary, the setup process is easy, minimizing the need for assistance (the most significant problem may be network issues).
6. GigSky – eSIM for Japan with a variety of unlimited plans
| Rating: | |
| Countries and regions: | 200+ |
| Supports 5G network: | Yes |
| Local/regional plans: | Yes |
| Starting price: | $4.99 |
I like GigSky because of its range of unlimited eSIM plans for Japan, making it a great contender for those who need loads of data. You can choose an unlimited plan for 1, 3, 5 , 7, 14, 21, and 30 days – GigSky offers the biggest number of unlimited plans on this list.
Plan options. GigSky offers a range of flexible eSIM plans designed for both short-term visitors and long-term travelers. Japan-specific plans have a validity of up to 30 days, while global plans extend up to 180 days, making it a solid choice for those traveling beyond Japan. GigSky provides local Japanese eSIMs as well as regional plans for those moving between multiple countries.
Japan plans pricing. GigSky is affordable and adaptable to different needs. Plans start at $4.99 for 1GB (7 days) and go up to $62.99 for an unlimited data option (30days). You can choose 1GB, 3GB, 5GB, 10GB or unlimited data, or test the service risk free with a 100MB 7-day trial. For unlimited data plans, there are a whopping 7 options ranging from 1 day to 30 days. However, I was disappointed to see that internet speeds slow down after you’ve used up 2.5GB.
| Japan eSIM data plan | Duration | Price |
| 1GB | 7 days | $4.99 |
| 3GB | 15 days | $8.39 |
| 5GB | 30 days | $12.59 |
| 10GB | 30 days | $20.99 |
| Unlimited | 1 day | $5.94 |
| Unlimited | 3 days | $13.99 |
| Unlimited | 5 days | $20.29 |
| Unlimited | 7 days | $26.59 |
| Unlimited | 14 days | $41.99 |
| Unlimited | 21 days | $52.49 |
| Unlimited | 30 days | $62.99 |
Disclaimer: Prices displayed herein are approximate examples only. Please check exact prices and terms and conditions on the official website before making a purchase.
Network coverage. GigSky eSIM delivers strong and stable connectivity across Japan, ensuring reliable signal in major cities, rural areas and tourist hotspots. With access to Japan’s top mobile networks, users can expect consistent speeds.
Activation process. Setting up GigSky is fast and user-friendly. Simply download the GigSky app, choose your plan, complete your payment, and install the eSIM. The interface guides users through the activation process smoothly, making it easy even for first-time eSIM users.
Customer support. GigSky offers customer assistance via live chat or email, helping users with setup, plan management, and any issues that may arise with the network. However, response times aren’t always the fastest, so it’s worth checking the GigSky FAQ and self-help resources for quick troubleshooting.
7. Nomad – affordable eSIM for Japan with flexible plans
| Rating: | |
| Countries and regions: | 200+ |
| Supports 5G network: | Yes |
| Local/regional plans: | Yes |
| Starting price: | $6.00 |
Nomad combines affordability and flexibility, allowing users to create their own day plans by choosing the length of their stay and the amount of data per day. If you see that you need more data, you can top up at any time during your trip.
Plan options. Nomad stands out with its two flexible eSIM options: Day Plans and Regular Plans. Day Plans offer from 500MB to 3GB, allowing you to choose the number of days (up to 7). If you exceed the daily data limit, speed is throttled to 512Kbps. Regular Plans provide fixed amounts ranging from 1GB to 50GB, with validity periods of 7, 30, or 45 days.
Japan plans pricing. Nomad’s cheapest Japan Regular Plan costs $6.00 for 1GB (7 days). Other options include 3GB, 5GB, 10GB, 20GB, and 50GB, catering to different travel durations and data needs. First-time users can also redeem 500MB for their trip.
| Japan eSIM data plan | Duration | Price |
| 1GB | 7 days | $6.00 |
| 3GB | 15 days | $8.00 |
| 5GB | 30 days | $11.00 |
| 10GB | 30 days | $17.00 |
| 20GB | 30 days | $25.00 |
| 50GB | 30 days | $57.00 |
Disclaimer: Prices displayed herein are approximate examples only. Please check exact prices and terms and conditions on the official website before making a purchase.
Network coverage. Nomad connects to Japan’s best mobile networks, ensuring strong and stable connection. Whether you're streaming, using GPS, or working remotely, the service delivers reliable speeds.
Activation process. Setting up Nomad is quick and easy. After purchasing your plan via the Nomad app, simply install and activate the eSIM, and it will start working automatically when you connect to a Japanese network.
Customer support. Nomad offers assistance through email and in-app chat, helping users with activation issues, data usage inquiries, and troubleshooting. While responses may take some time, the Nomad app includes a helpful FAQ section to resolve common concerns.
8. Instabridge – pay-as-you-go eSIM for Japan with no commitments
| Rating: | |
| Countries and regions: | 190+ |
| Supports 5G network: | Yes |
| Local/regional plans: | Yes |
| Starting price: | $2.50 |
Instabridge is a flexible eSIM provider for Japan. Buy a fixed Japanese eSIM plan and top it up as needed. Or choose a pay-as-you-go option at $7.00/GB, perfect for those who don’t know how much data they’ll be using on their trip.
Plan options. Instabridge provides 4 local data plans for Japan, offering 1GB, 3GB, 10GB, and 20GB with validity periods ranging from 7 to 30 days. For those who prefer more flexibility, Instabridge also features a pay-as-you-go option, allowing users to purchase data as needed without committing to a fixed plan.
Japan plans pricing. Instabridge’s cheapest fixed plan costs $2.50 for 1GB (7 days), while pay-as-you-go pricing starts at $7.00 per GB for Japan. Although this per-GB rate is higher, it’s ideal for travelers who aren’t sure how much data they’ll need and want to avoid overpaying for unused data.
| Japan eSIM data plan | Duration | Price |
| 1GB | 7 days | $2.50 |
| 3GB | 15 days | $5.50 |
| 10GB | 30 days | $16.00 |
| 20GB | 7 days | $24.00 |
Disclaimer. Prices displayed herein are approximate examples only. Please check exact prices and terms and conditions on the official website before making a purchase.
Network coverage. Instabridge provides stable and high-speed connectivity across Japan by leveraging top-tier mobile networks. Whether in bustling cities or quieter regions, users can expect a reliable internet connection for navigation, browsing, and communication apps.
Activation process. Getting started with Instabridge is fast and straightforward. After purchasing a plan, simply install the eSIM via the Instabridge app, and your connection will be ready to use instantly upon arrival in Japan.
Customer support. Instabridge offers customer assistance through in-app support and an online help center. While live support options may be limited, the platform provides clear guides and troubleshooting resources to assist users with setup and connectivity issues.
Best eSIM providers for Japan compared
To help you give a better overview, I compiled all of the best eSIMs for Japan above and compared their features. Here’s an overview of the best eSIM providers for Japan.
| Brand | Rating | Plan options | Compatibility | Networks | Calls | Texts | Price from |
| Saily | 7, 10, and 30 days | All iPhone and Android devices that support eSIM | LTE, 3G, 4G, and 5G | ❌ No | ❌ No | $3.79 | |
| Airalo | 7, 15, and 30 days with Japan plans | All iPhone and Android devices that support eSIM | LTE, 3G, 4G, and 5G | ✅ Yes (only on Discover+ global plan) | ✅ Yes (only on Discover+ Global plan) | $4.50 | |
| Jetpac | 4, 7, 10, and 30 days | All iPhone and Android devices that support eSIM | LTE, 3G, 4G, and 5G | ❌ No | ❌ No | $1.00 | |
| Ubigi | 7, 15, and 30 days | All iPhone and Android devices that support eSIM | LTE, 3G, 4G, 5G | ❌ No | ❌ No | $3.50 | |
| aloSIM | 7, 10, 15, and 30 days | All iPhone and Android devices that support eSIM | LTE, 4G, and 5G | ✅ Yes (provided by Hushed) | ✅ Yes (provided by Hushed) | $4.50 | |
| GigSky | 1, 3, 5, 7, 14, 15, 21, and 30 days | All iPhone and Android devices that support eSIM | LTE, 3G, 4G, 5G | ❌ No | ❌ No | $4.99 | |
| Nomad | 7, 30, and 45 days for Japan plans | All iPhone and Android devices that support eSIM | LTE, 3G, 4G, and 5G | ❌ No | ❌ No | $6.00 | |
| Instabridge | 7, 15, and 30 days + pay-as-you-go plans | All iPhone and Android devices that support eSIM | LTE, 3G, 4G, and 5G | ❌ No | ❌ No | $2.50 |
Things to consider before choosing an eSIM for travel in Japan
No matter why you’re visiting Japan – be it for adventure, work, or anything in between – choosing the right eSIM is key to staying connected. Here’s what to keep in mind when selecting the best eSIM for Japan:
- Compatibility. Ensure your device supports eSIM technology before purchasing. While many smartphones, tablets, and even wearables now support eSIMs, not all models (and not everywhere) do. Check your device’s specifications to avoid activation issues.
- Coverage. Verify that the eSIM provider offers strong coverage in the specific areas you’ll visit. Some providers also provide regional plans covering multiple countries, such as Japan and Korea, or broader Asia-wide options.
- Call support. While many eSIMs are data-only, some provide a phone number for making and receiving calls or SMS. Be sure to check if the eSIM you choose includes full call and SMS functionality if you need it.
- Amount of data. eSIM providers typically offer fixed data plans, but some allow pay-as-you-go options. If you opt for a fixed plan, check if the provider enables top-ups so you can add more data if needed.
- Travel destination. Ensure your eSIM has strong coverage in all the locations you plan to visit, whether major cities like Tokyo and Osaka or rural areas. Some providers may have weaker signals in remote regions, so check coverage maps before purchasing.
- Travel duration. eSIMs come with varying validity periods, starting from activation. Check if your plan lasts for your entire trip to avoid losing connectivity before your journey ends.
- Tethering functionality. If you plan to share your data with other devices, your eSIM should support mobile hotspot functionality, and not all of them do. This is especially useful for connecting a laptop or tablet while on the go.
- Price. Compare eSIM plans to find the best value for your needs. Look out for hidden fees, such as activation charges or extra costs for calls and SMS, to avoid unexpected expenses.
How we tested and ranked these eSIMs for Japan
How I tested and ranked these eSIMs for Japan
Together with the research team, I analyzed multiple eSIM providers to find the best eSIMs for Japan. Then, we evaluated them following our eSIM testing process. Here’s what aspects we covered:
- Coverage in Japan (30%). Reliable and wide coverage is crucial for uninterrupted connection. I analyzed which eSIMs offer the most extensive coverage across Japan, prioritizing providers that work in both urban and rural areas.
- Network connection (25%). For a smooth experience, I checked whether eSIMs support 4G and 5G networks for fast and stable connections. Thanks to speed tests and real-world user experiences, I confirmed that providers deliver consistent performance for browsing, navigation, and streaming.
- Data plans (20%). Different travelers have different needs, so I reviewed short-term and long-term plans, looking for options that cater to all types of visitors. The best eSIMs offer daily, weekly, and monthly plans, sometimes even longer, with varied data limits to fit casual users, digital nomads, and heavy streamers alike.
- Device compatibility (10%). It goes without saying that an eSIM is only useful if it works on your device. I made sure that each provider and selected eSIMs support a wide range of iOS and Android smartphones, guaranteeing accessibility for most travelers.
- Price (10%). While affordability matters, the cheapest isn’t always the best. I analyzed pricing across various plans and weighed costs against features, choosing providers that offer competitive pricing while maintaining service quality.
- Customer support (5%). Even with a seamless setup, good customer service is important. I checked response times and availability across different providers, prioritizing those with multiple support channels and reliable assistance.
How to buy eSIM in Japan
You can buy an eSIM online directly from your chosen provider’s website or app. To avoid connection problems upon arrival, it’s best to buy and activate your eSIM before traveling to Japan.
- Purchase and activation. Most providers send a QR code via email, which you need to scan to install the eSIM. Others require downloading their official app to purchase and activate the eSIM.
- Payment methods. eSIM providers typically accept credit/debit cards, PayPal, Google Pay, and Apple Pay.
By setting up your eSIM before your trip, you can access the internet immediately upon landing, avoiding the hassle of finding Wi-Fi or a local SIM card.
Does my phone support eSIM?
While most smartphones can run eSIMs, some older models may not be supported, so make sure to check it before making a purchase. Also, remember that eSIMs can’t be installed on carrier-locked smartphones.
Here’s how you can check if your phone supports eSIMs:
iPhone XR and later models support eSIM, including the iPhone XS Max and the latest iPhone 16 series.
To check:
- Go to Settings > General > About
- Scroll down to Carrier Lock or Network Provider Lock section
- If you see “No SIM restrictions” note, your device is not locked
- Scroll further down to Available SIM or Digital SIM
- If you see a 15-digit IMEI number, it means that your phone supports eSIMs
iPhones sold in mainland China, Hong Kong, and Macao may not support eSIM, even if they are newer models.
Samsung Galaxy S20 and newer models support eSIM.
To check:
- Go to Settings > Connections
- Scroll down to SIM Manager and click on it
- If an option Add eSIM is available, your device supports eSIMs
How to activate the eSIM plan on your phone
eSIMs are popular because they’re easy to use. While the eSIM activation methods vary, they’re all fairly straightforward. Here are the most common ones:
- QR-based eSIM activation. Many providers send an activation QR code via email after purchase. Simply go to Settings > Mobile Data > Add eSIM, scan the code, and follow the on-screen instructions to complete activation.
- Manual eSIM activation. If your provider doesn’t offer a QR code, you can manually enter activation details. Locate your eSIM settings, select Enter Details Manually, and input the SM-DP+ address and activation code provided by your eSIM provider.
- eSIM setup on your phone. Some smartphones allow users to add an eSIM directly from the device settings. Go to Settings > Mobile Data/Cellular > Add eSIM/Cellular Plan or similar, and select Search for Available Plans or Enter Activation Code to connect with your provider and activate your plan.
- App-based eSIM activation. Many eSIM providers allow activation through their official apps. Simply purchase your plan, follow the setup instructions, and your eSIM will be activated automatically.
- eSIM activation via provider website. Some eSIM providers let you activate directly from their website after purchase. Log into your account, navigate to My eSIMs, and follow the activation steps. You may need to log in on your phone to complete setup.
- In-store eSIM activation. For travelers who prefer in-person assistance, some physical stores in Japan offer eSIM activation. Visit an authorized retailer, purchase an eSIM, and get assistance from store staff to install and activate your plan.
Benefits of using an eSIM in Japan
Using an eSIM in Japan comes with several advantages, making it a convenient and cost-effective choice for travelers. Here are the key benefits:
- Instant connectivity upon arrival. No need to search for Wi-Fi or buy a SIM card; activate your eSIM before departure and get data as soon as you land.
- Quick and hassle-free activation. Skip the trip to a store. eSIMs activate in just a few clicks, saving you time and effort.
- Keep your regular phone number. Use your primary SIM for calls and texts while your eSIM provides internet access so you stay reachable.
- No need for a physical SIM card. Avoid the inconvenience of removing your regular SIM or finding a store to buy a new one.
- Avoid expensive roaming fees. eSIMs are cheaper and faster than international roaming, helping you stay connected without excessive charges.
- Easy data top-ups. Most providers allow seamless online top-ups, so you never run out of data while exploring Japan.
Things to know about using an eSIM card in Japan
Before switching to an eSIM for Japan, here are a few key points to keep in mind:
- Your phone must be unlocked. Carrier-locked devices only work with specific providers, preventing eSIM activation. Check with your carrier to ensure your phone is unlocked before purchasing an eSIM.
- Ensure your phone supports eSIM. While most newer smartphones are eSIM compatible, devices released before 2018 may not support them. Verify compatibility in your phone’s settings or on the manufacturer’s website.
- Not all eSIMs support calls and texts. Some eSIMs are data only, meaning you can’t make calls or send SMS. Even if a provider offers a phone number, it may be for incoming calls and messages only.
- Check eSIM validity before activating. Some eSIMs become active as soon as they’re installed, while others only activate upon connecting to a network. Be mindful of activation timing to maximize your eSIM’s usage period. Most providers allow activation within 1 to 3 months of purchase.
- Know the activation method. eSIMs can be activated in different ways, including scanning a QR code, using an app, or entering details manually. Check your provider’s instructions to ensure a smooth setup.
Best eSIMs for Japan: final thoughts
eSIMs are great for staying connected to the internet while traveling abroad. Those going on a trip to Japan can choose between a regional data plan that will work just in Japan, or, if they’re traveling across different countries in Asia, they can select a regional or even a global plan.
My favorite eSIM for Japan is Saily. It’s affordable, fast, and easy to activate, ensuring a stable connection in Japan without any hassle. And if you do run into an issue, Saily’s customer support will resolve it almost immediately. However, what I appreciated the most about Saily is its suite of privacy tools, including an ad blocker, web protection, and a virtual location changer.
Also read:
Best eSIM for Japan - FAQs
What is the cheapest eSIM card for Japan?
Instabridge offers the cheapest 7-day eSIM plan for Japan; you get 1GB for $1.00. However, Nomad offers the cheapest 1-day plan; you get 500MB of data for $4.00.
What is the best eSIM provider in Japan?
Based on our tests, Saily is the best eSIM for Japan. It offers great speeds, a fantastic price, and easy installation. And, with coverage in over 200 countries, it’s one of the best eSIMs for international travel.
Is it worth getting an eSIM for Japan?
Yes, getting an eSIM for Japan is definitely worth it. It provides seamless connectivity without the hassle of swapping physical SIM cards. The activation is instant, and it will help you avoid expensive roaming fees. With various affordable plans and reliable coverage, an eSIM ensures you stay connected throughout your trip. My top choice is Saily.
Is Airalo good eSIM for Japan?
Yes, Airalo has affordable local, regional, and global plans covering Japan. Its plans are suitable for both short-term and long-term travel. Plus, Airalo supports calling and texting in Japan on its Discover+ plan.
Is it better to get an eSIM or physical SIM in Japan?
There are numerous advantages to using an eSIM in Japan compared to a physical SIM card. An eSIM is much more convenient; you don’t have to go to a physical shop to purchase or top up, and you don’t have to remove your regular SIM card to use an eSIM. Plus, some eSIMs allow you to switch network carriers if you’re getting a weak signal.
