Arrive in Tokyo. Your phone's connected before you even reach the gate. No SIM swaps or forgotten stops at airport kiosks. Have data straight away to navigate to Shinjuku or upload your first sushi photo. Connected from the moment you arrive. That's travel, simplified with an eSIM.
What's an eSIM? And why you need it for your Japan trip!
An eSIM is a digital SIM profile for your phone that replaces a physical SIM card. Simply scan a QR code from your carrier to install a local Japanese data plan in minutes, directly from your phone.
Why use eSIM for Japan?
✔Instant arrival connectivity: Get connected the moment you arrive at Narita or Haneda, without having to wait in line at SIM vending machines.
✔ Keep your UK number active: Enjoy high-speed data across Japan while still being reachable on your regular number for calls and texts.
✔Flexible, commitment-free plans: Choose a short-stay data package that fits your itinerary, with no contracts and no hassle.
✔Travel smarter and safer: No more fiddling with tiny SIM cards or the danger of losing your original one.
Remain connected in Japan without stress. Choose your perfect eSIM plan today and enjoy a smarter way to travel Japan.
- CountryJapan
- Package OptionTotal 5GB
- Number of Days15 Days
- PriceFrom £3.52
- CountryJapan
- Package OptionTotal 15GB
- Number of Days30 Days
- PriceFrom £7.53
- CountryJapan
- Package OptionTotal 20GB
- Number of Days30 Days
- PriceFrom £9.36
Best eSIM for Japan: A UK traveller's guide
It's hard to discover the best eSIM for Japan from the UK. You may be in the market for the best eSIM coverage in Japan or the unlimited data plan, but either way, the comparison eliminates the hype and helps you find the right plan.
Provider | Sample Plan | Plan Price | Cost per GB | Networks in Japan | Key Advantage |
Trip.com | 3 GB / 7 days | £ 1.86 | £ 0.62 | KDDI, SoftBank | ✅ Best Value on Japan's Top Networks: The lowest cost per GB with reliable access to the best eSIM coverage in Japan (KDDI, SoftBank). Ideal for budget-conscious travellers. |
Airalo | 3 GB / 7 days | £ 6.5 | £ 2.17 | KDDI, SoftBank | Extensive eSIM library for global destinations. Better for multi-country trips. |
Holafly | Unlimited / 7 days | £ 24.0 | - | KDDI, SoftBank | Truly unlimited data for heavy users. Premium price point for ultimate peace of mind. |
Nomad | 1 GB / 7 days | £ 4.5 | £4.50 | KDDI, SoftBank | Flexible, longer-term data plans. Higher cost for low-data plans. |
*For the most accurate and up-to-date plans and pricing, please visit the provider's website.
Analysis & recommendation:
- The All-Rounder (10-15GB / 30 days): Ideal for a typical 15-21 day UK trip, this package provides the perfect balance of data for navigating, social media, and translation apps. With 30 days of validity, it comfortably covers your entire trip, offering maximum flexibility.
- The Light & Lean (3-5GB / 7-15 days): It's suited for short city trips or light users, covering basics like maps and messaging so you don't pay for data you won't use.
- The Data-Intensive (20GB+ / 30 days or Unlimited): This package is appropriate for intensive usage like viewing videos, vlogging, or sharing mobile hotspot because it offers complete data liberty to customers who have no limit on their connectivity.
Find the right data eSIM for your Japan trip
Whether you're relishing the cultural experiences of Japan with the 10-14 day trip or enjoying the ultimate 30-day adventure, there's an eSIM package just perfect for you. Worry no longer about how to buy an eSIM in Japan. Order it in advance via the Internet and be there with the peace of mind and instant data you deserve.
Best eSIM for travel in Japan: Your daily data plan
For British travellers in the market for the perfect eSIM for Japan, we've achieved the perfect blend of convenience and reliability with the Daily Data Plan. This tourist eSIM product for Japan provides standardized connectivity with the flexibility to select your daily data (0.5GB-100GB), hassle-free coverage across entire Japan.
Whether you need basic connectivity for short trips or bulk data for unlimited usage, this plan eliminates the guessing game. Get the best eSIM coverage in Japan with your UK number retained at all times - the ultimate solution to hassle-free in-trip connectivity from landing to takeoff.
Best eSIM Plans for Japan: Your flexible data option
For adventurers who desire complete data usage control, we offer the perfect Japan eSIM with our flexible Total Data Plan. Select precisely the data (1GB-50GB) and validity (1-30 days) you desire - ideal for alternate action-filled sightseeing days and relaxing WiFi days in your Japan trip.
Such a plan is ideal for long-haul flights or budget travellers who desire the cheapest cost data eSIM in Japan. Purchase one package to suit your entire vacation - significantly less expensive compared to day plans for long-term visitors.
All eSIMs at Trip.com for Japan contain:
- Network Coverage: Primary Japanese operators (SoftBank, Docomo) with 5G.
- Instant Digital Delivery: Pre-departure email of QR code for immediate installation.
- Flexible Plans:1–30 days, either cumulative or daily data packs.
- Immediate Activation: Live at landing (NRT, HND, KIX).
- Full high-speed 4G/5G data with hotspot capability.
- Easy Reinstallation: Install many times in the same device.
Get ready to travel in Tokyo, Kyoto and the rest! Discover your perfect Japan eSIM data package today!
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eSIM compatibility: Check your device
Before you dive into buying an eSIM plan, make sure your phone can actually handle it. The good news? Most smartphones made after 2018 are eSIM-compatible. Let’s see how you can check if yours is one of them.
If you have an Apple iPhone, here are the models that support eSIM:
- iPhones XS, XR, and all the versions that followed (up to the iPhone 15 series)
- iPhone SE (2nd generation and 3rd generation)
For Android users, eSIM support typically includes:
- Google Pixel 2 and later (full support starts from Pixel 3)
- Samsung S20 series and newer (this also covers the Z Flip and Fold series)
- Various models from Motorola, Huawei, Oppo, and Sony
Wondering if your phone is eSIM compatible?
- For iPhones: Go to Settings > Cellular > Add Cellular Plan. If you see the option "Add eSIM," then you’re good to go!
- For Android: Navigate to Settings > Connections > SIM Manager (or Network & Internet > Mobile Network), and look for "Download a SIM" or "Add eSIM."
✅ Most eSIM-compatible smartphones support Dual SIM (a physical SIM plus eSIM), allowing you to make calls with your home number while enjoying high-speed data internationally.
Activate Japanese eSIM: Simple 5-Step guide
Get online in Japan fast with this simple eSIM activation:
1. Buy: Choose your Japan eSIM data bundle. Make sure you have an uninterrupted Internet connection during the transaction.
2. Get QR Code: Get your QR code via email immediately. You're just one scan away from getting connected in Tokyo, Osaka, and beyond.
3. Install:
- Connect to Wi-Fi
- Scan the QR with your smartphone's camera
- Follow the on-screen prompts to install the plan
4. Configure:
- Turn on the Japan eSIM for cellular data
- Enable data roaming for it
- Keep your UK SIM active so you remain contactable
5. Turn on: The majority of eSIMs turn on automatically once you arrive in Japan. Others, just turn the plan on in settings upon arrival.
And just like that, you're connected and ready to go.
👉 Stay connected in Japan with an eSIM and discover top sights and tours.
Mobile coverage in Japan: What travellers should know
Japan enjoys one of the globe's best and most dependable cellular networks. Large service providers such as NTT Docomo and SoftBank offer widespread 5G/LTE coverage throughout the major islands—from the large city centers of Osaka and Tokyo to smaller regional centers and busier tourist corridors along the bullet-train's Shinkansen route. Although signal is good in outlying communities and near major attractions, speeds can be slower in remote communities in the mountains or some underground subway corridors.
For call and messaging purposes, utilize data-based apps such as WhatsApp or FaceTime with your eSIM connection. When your primary UK SIM also supports Wi-Fi calling, you can also receive and initiate calls with the eSIM's data. Download maps offline prior to going into rural terrain such as the Japanese Alps or Hokkaido. Most major eSIM tourist plans all include good coverage with the network of either Docomo or SoftBank with auto-switching to provide you the best signal you can get.
Trip.com eSIM: Japan travel made easy
Planning your trip to the Land of the Rising Sun out of the UK? Catching the cherry blossoms in Kyoto or strolling the neon-lit streets of Tokyo? Stay connected the moment you land at Haneda or Narita. With the Trip.com eSIM, discover Japan without hassle.
Here's why you should select Trip.com eSIM for your trip to Japan:
- Flexible Plans: Select 0.5GB/day or all-data plans (1–30 days), ideal for city strolls, trips to temples, and travel on the Shinkansen.
- Instant Activation: Scan the QR code once you've arrived and be activated in minutes without the SIM swap and preservation of your UK number.
- All-in-One Platform: Keep all your trips in one place at Trip.com like flights, hotels, and Japanese data with total ease.
Join the 20+ million travellers who depend on us for hassle-free service.
Stay connected from London to Tokyo, and make the most of your journey!
Japan eSIM FAQs
How does an eSIM work in Japan?
Once purchased, your eSIM connects directly to local networks like SoftBank and Docomo. You can keep your physical SIM inserted and continue using your regular UK number. Simply enable the eSIM for data in your settings, and you’re connected.Do eSIMs change your phone number?
No. Most eSIMs for travel are data-only, meaning they provide internet access without affecting your existing phone number.Is it cheaper to use an eSIM than roaming in Japan?
Yes, using an eSIM is typically much more affordable than traditional international roaming in Japan. You can select a fixed-cost data plan upfront, which often includes high-data or unlimited options. This allows you to use data freely without the worry of unexpected bill charges. eSIMs also activate instantly, eliminate the need for a physical SIM swap, and let you keep your original number active for calls and texts while you enjoy low local data rates.How long does an eSIM take to activate?
For most devices, scanning a QR code triggers the activation. Make sure you have a strong connection to the internet before you start, and the activation should wrap up in around 20 seconds— but in some cases it can take up to 10 minutes if the network connection isn't as strong.Can you buy an eSIM before going to Japan?
Absolutely, and it's highly recommended. Buying your Japan eSIM before you travel from the UK is the most convenient option. Install it pre-departure, and you can switch on your affordable data the instant you land. This seamless setup lets you use maps, contact your accommodation, and message family immediately, avoiding expensive airport roaming fees and the hassle of finding a SIM card after a long flight. Secure your connection in advance for a smoother start to your Japanese adventure.
Popular eSIM options in other countries/regions
Find the most popular eSIM options for your next trip and stay connected wherever you go!