- Top-Notch Network - experience seamless coverage from the KDDI network.
- Wi-Fi Hotspot - share your eSIM data plan with all your devices – it's included!
- Speed & Stability - enjoy fast, reliable data to run your favourite apps, anywhere.
- Secure Roaming - our eSIM plans shield your data, wherever you roam.
- Country Coverage - works across Japan.
- Speed: 4G / LTE
- Overseas Networks: KDDI
- Wi-fi Hotspot: Available
- Calls & SMS: Not included, only through apps (VOIP).
- Compatibility: All devices with eSIM. Refer compatibility list
- ID required: No
- Recharges: No
- Delivery: You will receive your eSIM instantly, by email.
- When to install: Anytime before your intended travel date.
- How to install: Scan QR code or Manual activation code.
- Activation Method: eSIM auto-connects to assigned overseas network
- Plan Start Date: Upon eSIM’s first overseas connection.
More questions? Go to our Help Centre
- Japan
- Japan
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Step 1: Get Yourself Ready
- Connect to stable wi-fi or internet connection.
- After purchasing your travel eSIM for Japan, open our eSimmer email with the installation QR code.
- Either print the QR code or share to another device.
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Step 2: Install Your eSIM
- Open the Camera app on your device and scan the QR code.
- You will see a prompt to add a new data plan.
- Tap the prompt and follow the directions on your device.
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Step 3: Activate Your eSIM
- Upon arrival, update your Data Roaming settings >
- Ensure your eSimmer eSIM is ON, with Data Roaming ON.
- If your home SIM is active, turn OFF Data Roaming.
- Your eSIM will automatically activate to the assigned overseas network.
Last step, for Apple iOS turn OFF “Allow Cellular Data Switching”.
Get your eSIM going in a dash!
Check out our eSIM installation guides for iOS and Android devices.
Is My Phone eSIM compatible?
- iPhone 16 Pro Max
- iPhone 16 Pro
- iPhone 16 Plus
- iPhone 16
- iPhone 15 Pro Max
- iPhone 15 Pro
- iPhone 15 Plus
- iPhone 15
- iPhone 14 Pro Max
- iPhone 14 Pro
- iPhone 14 Plus
- iPhone 14
- iPhone 13 Pro Max
- iPhone 13 Pro
- iPhone 13 mini
- iPhone 13
- iPhone 12 Pro Max
- iPhone 12 Pro
- iPhone 12 mini
- iPhone 12
- iPhone 11 Pro Max
- iPhone 11 Pro
- iPhone 11
- iPhone XS
- iPhone XS Max
- iPhone XR
- iPhone SE (2nd Gen 2020)
- iPhone SE (3rd Gen 2022)
- iPad Pro 13 (2024)
- iPad Pro 11 (2024)
- iPad Air 13 (2024)
- iPad Air 11 (2024)
- iPad Pro 12.9 (2022)
- iPad Pro 11 (2022)
- iPad (2022)
- iPad Air (2022)
- iPad 10.2 (2021)
- iPad Pro 12.9 (2021)
- iPad Pro 11 (2021)
- iPad Air (2020)
- iPad 10.2 (2020)
- iPad Pro 12.9 (2020)
- iPad Pro 11 (2020)
- iPad 10.2 (2019)
- iPad Air (2019)
- iPad Pro 12.9 (2018)
- iPad Pro 11 (2018)
- iPad 9.7 (2018)
- iPad Pro 12.9 (2017)
- iPad Pro 10.5 (2017)
- iPad Pro 10.5 (2017)
- iPad Mini (2024)
- iPad Mini (2021)
- iPad Mini (2019)
- Galaxy A55
- Galaxy A35
- Galaxy A54
- Galaxy S24 Ultra
- Galaxy S24+
- Galaxy S24
- Galaxy S23 Ultra
- Galaxy S23+
- Galaxy S23
- Galaxy S22 Ultra
- Galaxy S22+
- Galaxy S22
- Galaxy S21 Ultra
- Galaxy S21+
- Galaxy S21
- Galaxy S20 Ultra
- Galaxy S20+
- Galaxy S20
- Galaxy Z Fold6
- Galaxy Z Fold5
- Galaxy Z Fold4
- Galaxy Z Fold3
- Galaxy Z Fold2
- Galaxy Fold
- Galaxy Z Flip6
- Galaxy Z Flip5
- Galaxy Z Flip4
- Galaxy Z Flip3
- Galaxy Z Flip
- Galaxy Tab S10 Ultra
- Galaxy Tab S10+
- Galaxy Tab Active5
- Galaxy Tab A9+
- Galaxy Tab A9
- Galaxy Tab S9 Ultra
- Galaxy Tab S9+
- Galaxy Tab S9
- Galaxy Note20 Ultra
- Galaxy Note20
- Galaxy S24 FE
- Galaxy S23 FE
- Galaxy Tab S9 FE+
- Galaxy Tab S9 FE
- Pixel 9 Pro XL
- Pixel 9 Pro
- Pixel 9
- Pixel 9 Pro Fold
- Pixel 8 Pro
- Pixel 8a
- Pixel 8
- Pixel Fold
- Pixel 7 Pro
- Pixel 7a
- Pixel 7
- Pixel 6 Pro
- Pixel 6a
- Pixel 6
- Pixel 5a
- Pixel 5
- Pixel 4a
- Pixel 4 XL
- Pixel 4
- Pixel 3a
- Pixel 3 XL
- Pixel 3
- Pixel 2 XL
- Pixel 2
- Motorola Edge 50 Neo
- Motorola Edge 50
- Motorola Edge 50 Ultra
- Motorola Edge 50 Fusion
- Motorola Edge 50 Pro
- Motorola Moto G55
- Motorola Moto G35
- Motorola Razr 50 Ultra
- Motorola Razr 50
- Motorola Edge (Gen5)
- Motorola Moto G85
- Motorola Moto G Stylus
- Motorola Moto G Power
- Motorola Moto G
- Motorola Moto G34
- Motorola Edge (Gen4)
- Motorola Edge 40 Neo
- Motorola Edge 40
- Motorola Edge 40 Pro
- Motorola Moto G54
- Motorola Moto G54 Power
- Motorola Razr 40 Ultra
- Motorola Razr 40
- Motorola Edge Plus 2023
- Motorola Edge 2022
- Motorola Moto G53
- Motorola Razr 2022
- Motorola Razr 2020
- Motorola Razr 2019
- Huawei Pura70 Pro
- Huawei P40 Pro
- Huawei P40
- Huawei Mate 40 Pro
- Nokia G60
- Nokia X30
- Nokia XR21
- Oppo Find N2 Flip
- Oppo Find X5 Pro
- Oppo Find X5
- Oppo Find X3 Pro
- Oppo Find X3
- Xiaomi 14T Pro
- Xiaomi 14T
- Xiaomi Redmi Note 14 Pro+
- Xiaomi Redmi Note 14 Pro
- Xiaomi 14
- Xiaomi 14 Pro
- Xiaomi Redmi Note 13 Pro+
- Xiaomi Redmi Note 13 Pro
- Xiaomi 13T Pro
- Xiaomi 13T
- Xiaomi 13
- Xiaomi 13 Pro
- Xiaomi 13 Lite
- Xiaomi 12T Pro
- Microsoft Surface Duo 2
- Microsoft Surface Duo
eSIM Japan. Travel Like a Local.
Embarking on a Japanese adventure? With eSimmer, you’ve got all your data roaming needs taken care of, with a travel eSIM for Japan. Now, to complete your packing list, download the best Japan travel apps and let your phone become your personal travel concierge.
When navigating the bustling streets of Tokyo, we recommend finding your way with the Japan Travel App by NAVITIME. As the aroma of sushi wafts through the air in the Tsukiji district, Tabelog can help you find the perfect local sushi bar tucked away in this culturally rich neighbourhood.
While shopping in Osaka, the Google Translate app will come in handy. Its camera feature instantly converts Japanese characters into English in real time, making it easier to understand restaurant menus, grocery store items, and street signs.
If you find yourself in Sapporo, exploring the city’s snow festivals and seafood markets, Klook.com can take you on a tour of the famous Sapporo Beer Museum, immersing you in the city’s unique culture.
Whether you’re a seasoned traveller or a first-time visitor seeking a more local travel experience, check out our blog for the best Japan travel apps and you’ll be travelling like a local the moment you touch down.
Don’t forget to pack our Japan eSIM Card. Happy Travels! 😊
Why eSimmer?
eSIMs for Every Traveller
Find your perfect Japan travel eSIM! We offer a range of options to match your data needs, where you're going, and how long you'll be there.
Money Back Guarantee
Having troubles with your Travel eSIM connecting abroad? If we can’t sort it out right there and then, don’t stress! As long as you’ve followed our guidelines, we’ll swing a full refund your way.
Always-on Support
Need help with eSIM installation, activation abroad, or data roaming? Don't sweat it! Our customer support team is here to guide you through the process. Start a chat with us today!
All questions are valid; some are just asked more frequently.
What is the best eSIM for Japan?
To pick the best eSIM for Japan, consider your data needs, destinations, and travel duration. At eSimmer, we offer various travel eSIM plans for you to find your perfect fit. You can enjoy our low data roaming rates and reliable coverage of the KDDI network. If you’re not sure which eSIM plan is best for you, contact our customer support team; chat with us now!
Which mobile carrier does this eSIM card connect to?
Your eSIM card works across Japan, connected to the mobile carrier, KDDI.
When will I receive my eSIM?
You will receive your eSIM immediately. After purchasing your travel eSIM for Japan, go to your email inbox and look for our eSimmer email that includes a QR code for installation.
When should I install my eSIM?
Install your eSIM before you depart for your travels. It’s easier to do this where you have a stable internet connection, like at home or work. This way, you won’t need to depend on airport or hotel WiFi. Plus, if you install your eSIM before you leave, it will connect to the overseas network as soon as you arrive, so you can start exploring right away. (Don't try to activate your travel eSIM while you’re still at home, because it won't be able to connect to the overseas networks yet).
How do I activate my eSIM upon arrival in Japan?
When you arrive at your destination, we suggest you check your phone settings to make sure that your new eSimmer eSIM is turned ON and the only data source.
Your eSimmer eSIM will automatically activate to the assigned overseas network. (Don't try to activate your travel eSIM while you’re still at home, because it won't be able to connect).
Learn about Roaming Settings in our blog.
When does my eSIM data plan start?
Your eSIM data plan is ready to roll as soon as you connect to the mobile network in your destination country! The first activation is when your travel SIM plan starts, and you can enjoy your data allowance for its full duration, either 10 or 30 days.
Should I turn data roaming on?
Yes, at your destination you should turn ON data roaming for your eSimmer eSim. Data roaming lets your phone use the internet and mobile data while travelling. To check your data roaming settings, follow these steps:
- Go to your phone Settings > Mobile
- Find your eSimmer eSIM and turn it ON
- Turn ON Data Roaming for your eSimmer eSIM
Learn about Roaming Settings in our blog.
Can I chat with travel buddies using a Japan eSIM?
Yes, you can. Just use a data app like Whatsapp to call or text them. Open Whatsapp, tap calls, and enter the number with the country code. You can call any number with Whatsapp, but to get calls, your travel buddy needs Whatsapp too. It’s easy to stay in touch with your eSimmer eSIM.
What are the conditions for getting a refund?
At eSimmer we know that sometimes things change after you have made a purchase. You can ask for a refund in the following circumstances:
- You don’t need the eSIM anymore due to a trip cancellation.
- You encounter an install or connection issue while abroad and we’re unable to resolve it.
If your problem is install or connection related, please contact us while you are abroad, so we can resolve it with immediate troubleshooting. Do this when you have WiFi by emailing - support@esimmer.com. If we can’t fix your problem, and provided all our purchasing guidelines have been adhered to, we will issue a full refund.
