€2.99 VAT excl.
1 GB 7 Days
Roaming on
KDDI
Best eSIM for Japan: Data Plan UPeSIM
BEST eSIM NETWORKS 4G/LTE or 5G speed 📲
24/7 CUSTOMER SUPPORT response in 15 minutes 💬
BEST QUALITY/PRICE VALUE 💵
100% SECURE ONLINE PAYMENT 🔐
€8.99 VAT excl.
5 GB 10 days
Roaming on
KDDI
€14.99 VAT excl.
10 GB 30 Days
Roaming on
KDDI
📅 Complete guide updated: September 2025 | Field tested in Japan
eSIM Japan 2025: Complete Guide, Price Comparison and Installation
Cheap Japan eSIM card with flexible data plans on premium KDDI 5G network. Discover how to easily install your eSIM for Japan and enjoy internet in Japan without hidden fees.
🇯🇵 Best Japan eSIM 2025 - Instant Activation
Japan data plan from €2.99 • Nationwide 5G connection • 2-minute installation • 24/7 English support
eSIM Japan: The Ideal Solution to Stay Connected in Japan in 2025
Planning a trip to Japan and looking for the best solution for internet in Japan? Our complete guide on Japan eSIM helps you choose the best Japan data plan for your stay. Whether you're looking for a cheap Japan eSIM, an eSIM data plan, or simply want to understand how to install an eSIM in Japan, you're in the right place.
Our Japan eSIM card UPeSIM is the perfect solution for travelers who want to avoid airport queues, high roaming charges, or the complexity of Pocket WiFi. With our Japan virtual SIM card, you get instant Japan internet connection on the KDDI network (partner of au/SoftBank).
📊 Japan eSIM Comparison 2025: Airalo vs Holafly vs UPeSIM vs Pocket WiFi
We tested all mobile internet in Japan solutions to help you choose the best Japan eSIM. Here's our complete Japan eSIM comparison based on field experience in Tokyo, Osaka and Kyoto:
🏆 Japan eSIM Comparison Table 2025
| Provider | 7-day Price | 5G | Sharing | EN Support |
|---|---|---|---|---|
| UPeSIM | €2.99 | ✅ | ✅ | ✅ 24/7 |
| Airalo Japan | €4.50 (1GB) | ✅ | ❌ | ❌ Chat only |
| Holafly Japan | €25.65 | ⚠️ Throttled | ✅ | ⚠️ Limited |
| Pocket WiFi | €70-140 | ✅ | ✅ | ❌ |
Airalo eSIM Japan
Low price but limited data, no connection sharing
Low price but limited data, no connection sharing
Holafly eSIM Japan
"Unlimited" data but throttled after 1-2GB/day, high price
"Unlimited" data but throttled after 1-2GB/day, high price
Ubigi eSIM Japan
Complex interface, inflexible plans
Complex interface, inflexible plans
Pocket WiFi Japan
$22-33/day, device to manage, limited battery
$22-33/day, device to manage, limited battery
🏆 UPeSIM eSIM Japan
✅ Best value for money, true 5G, English support
✅ Best value for money, true 5G, English support
What is eSIM? Understanding Japan Virtual SIM Cards
What exactly is eSIM? An eSIM (embedded SIM or virtual SIM card) is a chip built into your smartphone that replaces traditional physical SIM cards. For Japan, it's the most practical solution: you buy your Japan internet plan online, receive a QR code, and connect instantly upon arrival.
🔄 eSIM vs Traditional Solutions for Internet in Japan
- Japan eSIM: 2-minute installation, automatic activation, fixed price from $3.29
- Japan SIM card at airport: Long queues, limited hours, 2-3x higher price
- Pocket WiFi: Rental + deposit, battery to recharge, bulky
- US carrier roaming: $10-15/day, limited data, bill shock
💰 Economical
A cheap Japan eSIM costs $3.29 vs $100+ for weekly Pocket WiFi
A cheap Japan eSIM costs $3.29 vs $100+ for weekly Pocket WiFi
⚡ Instant
Immediate eSIM activation, works upon landing at Narita/Haneda
Immediate eSIM activation, works upon landing at Narita/Haneda
📱 Compatible
Works on iPhone, Samsung, Google Pixel and 200+ models
Works on iPhone, Samsung, Google Pixel and 200+ models
💰 Japan eSIM Prices 2025: Complete Rate Guide
How Much Does a Japan eSIM Cost?
Japan eSIM prices vary enormously by provider. Here's a transparent comparison of Japan eSIM rates in September 2025:
- UPeSIM - Cheap Japan eSIM:
- 1GB/7d: €2.99 (best market price!)
- 5GB/10d: €8.99 (less than €1/day)
- 10GB/30d: €14.99 (€0.50/day)
- Airalo Japan prices: €4.50 (1GB) to €25.00 (20GB) - no connection sharing
- Holafly Japan rates: €25.65 (7d) to €128.90 (90d) - throttling after limit
- Ubigi Japan cost: From €15.30 depending on promotions
- Pocket WiFi rental: €10-20/day or €70-140/week + deposit
💡 Money-saving tip: For a week-long stay in Japan, a cheap eSIM like UPeSIM (€2.99) saves you up to €130 vs Pocket WiFi or roaming.
Our Japan eSIM Plans: Total Transparency
| 5G Data | Validity | Price | Recommended Use | Order |
|---|---|---|---|---|
| 1 GB | 7 days | €2.99 VAT excl. |
Short Tokyo/Kyoto stay, basic navigation | |
| 5 GB | 10 days | €8.99 VAT excl. |
JR Pass circuit, moderate streaming | |
| 10 GB | 30 days | €14.99 VAT excl. |
Long stay, heavy usage, remote work |
✓ All our plans include: KDDI 5G network • Unlimited connection sharing • 24/7 English support • No activation fees • Instant QR code
📲 How to Install a Japan eSIM: Complete 2025 Guide
Wondering how to install Japan eSIM on your phone? Follow our detailed eSIM installation guide, much simpler than setting up Pocket WiFi or buying a SIM at the airport!
🚀 Japan eSIM Installation in 4 Simple Steps
- Buy Japan eSIM online (2 min)
Order your Japan eSIM plan on our website or mobile app. Secure payment by credit card or PayPal. - Instant QR code delivery (immediate)
Receive your eSIM QR code by email within 60 seconds. Also viewable in your UPeSIM account. - Scan and install (1 min)
On your flight to Japan:- iPhone: Settings → Cellular → Add eSIM → Scan QR code
- Android: Settings → Network → SIM cards → Add → Scan QR code
- Automatic activation in Japan (0 min)
Your Japan eSIM connects automatically to the KDDI network upon landing. No additional setup needed!
💡 Tip: Install your eSIM before departure. Validity period only starts upon first connection to the Japanese network, not during installation.
⏱️ Installation Time Comparison
- UPeSIM eSIM: 2 minutes total (before departure) ✅
- Pocket WiFi: 30-60 min (airport queue + return) ❌
- Airport SIM: 20-45 min (find counter + activation) ❌
- Carrier roaming: Complex setup, bill shock ❌
⭐ Japan eSIM Reviews: What Our Customers Say
Check out authentic Japan eSIM reviews from travelers who tested our solution. Our Japan eSIM card is rated 4.9/5 based on over 8,900 verified customer experiences.
⭐⭐⭐⭐⭐
Marie D. - Paris (Tokyo-Kyoto Trip)
"Excellent cheap Japan eSIM! I compared all prices: Airalo, Holafly, Pocket WiFi... UPeSIM beats everything at €2.99. Japan eSIM installation ultra simple on the plane, perfect 5G connection on KDDI network in Tokyo. Best choice for Japan internet!"
📅 August 2025 - 5GB/10 days plan - Verified ✓⭐⭐⭐⭐⭐
Thomas L. - Lyon (Business Stay Osaka)
"Looking for how to get internet in Japan without breaking the bank. After testing, this Japan eSIM card is perfect: stable 5G, connection sharing with laptop, fast English support. Saved €150 vs Pocket WiFi rental!"
📅 September 2025 - 10GB/30 days plan - Verified ✓⭐⭐⭐⭐⭐
Sophie M. - Brussels (15-day Circuit)
"I hesitated between eSIM or Pocket WiFi Japan. Great choice with eSIM! 2-minute installation, works everywhere (Tokyo, Mount Fuji, Osaka). Japan data plan at €8.99 unbeatable. Never again Pocket WiFi!"
📅 July 2025 - 5GB/10 days plan - Verified ✓⭐⭐⭐⭐⭐
Alex R. - Geneva (First Japan Trip)
"Best Japan internet solution for solo traveler. 5G data works even on the Shinkansen! Responsive customer support when I had a question about how to install eSIM iPhone. Top!"
📅 June 2025 - 1GB/7 days plan - Verified ✓
⭐ 4.9/5 - Average Japan eSIM Rating
Based on 8,924 verified traveler reviews
🏆 Voted best Japan eSIM 2025 by our customers✅ Why Choose UPeSIM eSIM for Your Japan Trip?
💰 Cheap Japan eSIM - Best Price Guaranteed
Plans from €2.99 (vs €25 Holafly, €100 Pocket WiFi). Save up to 90% on your Japan internet costs. Transparent pricing with no hidden fees.
Plans from €2.99 (vs €25 Holafly, €100 Pocket WiFi). Save up to 90% on your Japan internet costs. Transparent pricing with no hidden fees.
📶 True Japan 5G - Premium Network
Unthrottled KDDI 5G network (au/UQ mobile) connection. 99% coverage across Japan, even on the Shinkansen between Tokyo-Kyoto-Osaka.
Unthrottled KDDI 5G network (au/UQ mobile) connection. 99% coverage across Japan, even on the Shinkansen between Tokyo-Kyoto-Osaka.
⚡ Ultra-Fast Installation
How to install Japan eSIM? Scan the QR code in 2 minutes. Automatic activation upon landing, zero complex configuration.
How to install Japan eSIM? Scan the QR code in 2 minutes. Automatic activation upon landing, zero complex configuration.
🔄 Connection Sharing Included
Turn your smartphone into a WiFi hotspot. Connect laptop, tablet, camera. Share with travel companions.
Turn your smartphone into a WiFi hotspot. Connect laptop, tablet, camera. Share with travel companions.
🇺🇸 24/7 English Customer Support
Assistance in English via chat, email, phone. Response in less than 5 minutes during your Japan stay.
Assistance in English via chat, email, phone. Response in less than 5 minutes during your Japan stay.
📱 Compatible with 200+ Smartphones
Works on iPhone (XS and newer), Samsung (S20 and newer), Google Pixel, Huawei, Xiaomi. Easy eSIM compatibility check.
Works on iPhone (XS and newer), Samsung (S20 and newer), Google Pixel, Huawei, Xiaomi. Easy eSIM compatibility check.
✈️ Flexible Activation
Install before departure, validity starts upon Japan connection. Perfect for planning your Japan trip peacefully.
Install before departure, validity starts upon Japan connection. Perfect for planning your Japan trip peacefully.
🌏 Multiple Destinations
Need eSIM for other countries? Add Korea, Thailand, Europe on the same device. Multi-profile support.
Need eSIM for other countries? Add Korea, Thailand, Europe on the same device. Multi-profile support.
🎥 Video Tutorials: How to Install Your Japan eSIM
Follow our detailed Japan eSIM installation video guides. Clearer than Airalo or Holafly tutorials, with English explanations!
Japan eSIM Installation on iPhone
Complete tutorial for iPhone Japan eSIM: XS, 11, 12, 13, 14, 15
Japan eSIM Installation on Android
Guide for Android Japan eSIM: Samsung, Google Pixel, Xiaomi
📺 Complete tutorials to successfully install Japan eSIM in under 2 minutes. Much simpler than setting up Pocket WiFi at the airport!
❓ Japan eSIM FAQ: Answers to Frequent Questions
1. What is the best eSIM for Japan in 2025?
After testing all options, UPeSIM is the best Japan eSIM in 2025 thanks to its unbeatable price (from $3.29), true 5G on KDDI network, and 24/7 English support. More reliable than Airalo, cheaper than Holafly, simpler than Pocket WiFi.
2. How to buy an eSIM for Japan?
To buy Japan eSIM: visit our website, choose your plan, pay online, and receive your QR code by email in 60 seconds. You can also order via our iOS/Android mobile app. No physical store needed.
3. How much does internet in Japan cost with an eSIM?
A cheap Japan eSIM costs from $3.29 (1GB/7d) to $16.49 (10GB/30d). That's 5-10x cheaper than Pocket WiFi ($110-220/week) and 10x less than roaming from US carriers ($10/day). Our Japan eSIM price includes 5G and connection sharing.
4. How to install a Japan eSIM on iPhone?
iPhone Japan eSIM installation in 3 steps: 1) Settings → Cellular → Add eSIM, 2) Scan the UPeSIM QR code, 3) Activate the line upon arrival in Japan. Compatible with iPhone XS, XR, 11, 12, 13, 14, 15 and all recent models.
5. Does eSIM work everywhere in Japan?
Yes! Our Japan eSIM uses the premium KDDI network which covers 99% of Japanese territory in 4G/5G. Works perfectly in Tokyo, Osaka, Kyoto, on the Shinkansen, and even in rural areas like Mount Fuji or Takayama.
6. eSIM or Pocket WiFi for Japan: what to choose?
eSIM is vastly superior to Japan Pocket WiFi: no rental (save $110-220), no device to carry, no battery to manage, instant activation. Pocket WiFi only makes sense for groups of 4+ people sharing the same connection.
7. Which Japan eSIM with unlimited data to choose?
Beware of "unlimited data Japan" offers: Holafly throttles after 1-2GB/day, which isn't truly unlimited. Our UPeSIM plans offer genuine high-speed unthrottled data with total transparency: 1GB, 5GB or 10GB according to your needs. More honest and economical than false "unlimited" promises.
8. Is my phone eSIM Japan compatible?
Check eSIM compatibility: dial *#06# on your phone. If an "EID" appears, it's compatible. Works on 200+ models: iPhone XS+, Samsung Galaxy S20+, Google Pixel 3+, Huawei P40+, Xiaomi Mi 11+. Check our complete list.
9. Can you use WhatsApp/Line with Japan eSIM?
Absolutely! Our Japan data plan supports all apps: WhatsApp, Line (very popular in Japan), Instagram, Google Maps, instant translation. Line is particularly useful for communicating with Japanese services (restaurants, hotels).
10. When to activate my eSIM before going to Japan?
Install your Japan eSIM anytime before departure (even 1 month before). The validity period only starts upon first connection to the Japanese network, not during profile installation. Tip: install during flight to save time.
11. How to recharge or extend my Japan eSIM?
To recharge Japan eSIM: log into your UPeSIM account, select "Add data", choose a new plan. Addition happens automatically without new QR code. Ideal if you extend your Japan stay.
12. Does Japan eSIM allow calling to the US?
Our Japan eSIM is data-only (no voice calls). To call from Japan, use WhatsApp, Skype, FaceTime, or VoIP apps. Much more economical than traditional international calls. Keep your US SIM for receiving banking SMS.
13. Questions about our Japan eSIM?
English customer support available 24/7. Also check our complete Japan eSIM guide: Detailed FAQ
🇯🇵 Japan eSIM Coverage: Internet in All Destinations
Our Japan eSIM guarantees fast and stable internet connection throughout the Japanese archipelago thanks to the premium KDDI 5G network. Whether you visit major metropolises or remote temples, enjoy internet in Japan without interruption.
📍 Main Destinations Covered
- Tokyo (Shibuya, Shinjuku, Asakusa, Akihabara) - Ultra-fast 5G
- Osaka (Dotonbori, Umeda, Namba) - Perfect coverage
- Kyoto (Gion, Arashiyama, temples) - 5G at tourist sites
- Hiroshima (Peace Memorial, Miyajima) - Stable connection
- Nara (Todaiji, deer park) - Continuous 4G/5G
- Mount Fuji (Kawaguchiko, Hakone) - Even in mountains
- Nikko (shrines, nature) - Complete coverage
- Takayama (Japanese Alps) - Reliable 4G
- Kanazawa (gardens, geishas) - Downtown 5G
- Fukuoka (Hakata, Tenjin) - Metropolitan 5G
- Sapporo (Hokkaido, skiing) - Winter connection
- Okinawa (beaches, islands) - Coastal 4G/5G
🚄 Transportation: Internet in Japanese Transport
Our Japan 5G eSIM works perfectly on:
- Shinkansen (bullet trains) - Stable 5G Tokyo-Kyoto-Osaka-Hiroshima
- Tokyo/Osaka Metro - Continuous underground connection
- JR Pass routes - 99% national coverage
- Long-distance buses - 4G/5G on highways
- Airports (Narita, Haneda, Kansai) - Ultra-fast 5G
💡 Travel Tip: Download offline Google Maps for Tokyo/Kyoto before departure. With our Japan 5G eSIM, you'll still have real-time internet for instant translation, restaurant bookings, and social media everywhere in Japan!
📚 Recommended Articles on Japan eSIM
🎯 Summary: Best Japan eSIM 2025
To summarize, if you're looking for a cheap Japan eSIM, reliable and easy to use, UPeSIM is your best option in 2025. Our Japan eSIM card offers:
- ✅ Unbeatable price: from $3.29 (vs $110+ Pocket WiFi)
- ✅ True 5G on premium KDDI network
- ✅ 2-minute installation: QR code scan
- ✅ Unlimited connection sharing: laptop, tablet, family
- ✅ 24/7 English support: response <5 min
- ✅ National coverage: Tokyo, Osaka, Kyoto, everywhere
Don't waste more time with Pocket WiFi queues at the airport or complex roaming setups. Order your Japan eSIM now and enjoy internet in Japan from the moment you land!
📌 Complete Japan eSIM Coverage
Our Japan eSIM works perfectly throughout the Japanese archipelago thanks to the premium KDDI network: Tokyo, Osaka, Kyoto, Hiroshima and all tourist destinations. A reliable alternative to Pocket WiFi, Airalo, Holafly and Ubigi.
