Teclapi eSIM
Home/eSIM Destinations/Japan eSIM
Back to all eSIMs
Japan eSIMSingle Country

Japan eSIM

Plans from $1.02

Data only (no phone number)

Plan Information

Hotspot Sharing

Yes

Phone Number Included

No

Top-up Available

No

Network Type

Roaming

APN:mobile.three.com.hk

Networks

KDDI, Docomo

Coverage Area (1)

Japan

Note

⏰ Each day of your Japan eSIM is counted until 11:59 PM GMT+8. Plan your activation wisely to make every day count.

Choose Your Plan

Select a data plan that fits your travel needs.

Plan Duration

Data Plan

Please select all options to view pricing and add to cart.

Explore Every Corner in Tokyo with Teclapi eSIM for Japan

Japan rewards those who wander - from Tokyo's electric back alleys to the ancient cedar forests of Yakushima, from ramen shops in Sapporo to hidden onsen villages in the Japanese Alps. With Japan's three major networks in your pocket, no destination is out of reach.

Enjoy your trip with:

⚡ High-speed 4G LTE & 5G data on KDDI, DoCoMo - Japan's two major networks combined. 

🗺️ Nationwide coverage across Tokyo, Kyoto, Osaka, Hokkaido, Okinawa and all 47 prefectures. 

🚫 No roaming fees, anywhere in Japan. 

✈️ Install before you fly - connect the moment you land at Narita or Haneda. 

📶 Hotspot sharing fully supported, keep your whole travel group online.

Smart connectivity for travelers:

  • Works with Google Maps, Google Translate, WhatsApp, Instagram, TikTok, YouTube, ChatGPT & all travel apps
  • Signal on the Shinkansen, Tokyo Metro, subway tunnels and rural train routes
  • Choose between Daily (1–3GB/day) or Total (5–50GB) plans to match your usage
  • No physical SIM, keep your home SIM active alongside your Japan eSIM

Enjoy Affordable & Reliable Data in 3 Steps

01.

Customize your plan by selecting the Unlimited internet days you need.

02.

Check your email for the QR code and scan it with your phone to install the eSIM.

03.

Turn on your eSIM at arrival and connect instantly.

Why Choose Teclapi for Your Japan eSIM

💬
Use your favorite apps as usual.

You can keep using your favorite apps like WhatsApp, Snapchat, Messenger, Instagram,.. like you're at home, no change needed. 
📶
Two networks. One eSIM. Total coverage

Teclapi's Japan eSIM connects across KDDI & DoCoMo - Japan's entire Big Three, automatically using the strongest available signal at any moment.

∞
Designed for every trip

Flexible plans from 1 to 30 days, with daily data packages available. You can also choose the preferred network for a seamless experience. 
🎧
24/7 customer support

If you have any questions or need help choosing the best plan, we’re here to support you 24/7. 
⚡
Instant connection on arrival

The QR code will be sent to you after payment confirmation by email. Your job is to install, activate and enjoy yourself. 
📡
Share data with family and friends

Use your phone with our Japan eSIM and you can create a Wifi network and connect with multiple devices. 

Ready to stay connected in Japan?
Choose your perfect Japan eSIM plan now and travel worry-free.
Pick eSIM option

Frequently Asked Questions

Everything you need to know about this eSIM plan.

Install your Japan eSIM the evening before your trip begins. Validity starts from the moment of installation — not from purchase and not from first data use. Installing at home the night before means your plan is live and ready the moment you land at Narita or Haneda, with no setup stress at the airport.
Always purchase at least one extra day beyond your planned stay. The GMT+8 day-counting cutoff arrives one hour earlier than Japan's local midnight, so travelers from certain time zones may find their days expire sooner than expected. The extra day acts as a buffer throughout your trip.
Validity starts from the moment you install the eSIM - not when you purchase it. You can buy well in advance without losing any days. Just hold off on installation until the evening before your departure.
Daily Plans give you a set data allowance per day - either 1GB, 2GB, or 3GB - that refreshes each day. They're great if you have consistent daily usage and want a predictable budget per day. Total Plans give you a fixed data pool (5GB to 50GB) to use freely across your entire trip without daily limits. They're better if your usage varies, lighter on travel days, heavier when sightseeing or hotspot sharing. If you're unsure, choose a Total Plan one size up from your estimate for peace of mind.
Your Japan eSIM by Teclapi runs across all three of Japan's major networks — KDDI (au) and DoCoMo, automatically connecting to whichever delivers the strongest signal at your location. DoCoMo remains the sole winner of both Coverage Experience and 5G Coverage in Japan according to Opensignal's October 2025 report, with the most resilient network in rural areas. SoftBank leads in median download speeds at 62 Mbps, while KDDI follows closely at 57.85 Mbps. 
Having access to all three means you get the best of every network depending on where you are.
Yes. All three major carriers provide good coverage along Shinkansen routes, with DoCoMo marginally better on routes with long tunnel sections such as the Tohoku and Hokuriku lines. For the popular Tokyo–Kyoto route, all three networks perform well. Since your Teclapi Japan eSIM connects to all three simultaneously, you'll automatically use the best available signal throughout any Shinkansen journey.
Yes. KDDI maintains strong signals in most Tokyo Metro stations and tunnels, DoCoMo provides solid coverage across major subway lines. Major stations like Shinjuku, Shibuya, and Tokyo Station have excellent connectivity. Older or smaller stations on certain lines may occasionally have weaker signal.
Japan is known for its fast and reliable mobile networks. Your Teclapi Japan eSIM runs on KDDI, delivering average speeds of 57.85 Mbps, with 5G available in major cities on compatible devices. Whether you're navigating Tokyo, sharing photos from Kyoto, or streaming on the Shinkansen, you can expect a smooth and dependable connection throughout your trip.
No. This plan covers Japan only. If you're planning to visit South Korea, Taiwan, or other nearby destinations, check out our Asia 11 countries eSIM plan for a reliable connectivity.
Google Maps works on your Japan eSIM and is useful for general navigation. However, for train routes, subway directions, and precise walking guidance, we recommend also downloading Yahoo! Japan Maps or using Google Maps offline mode before your trip - Japanese transit systems are highly complex and local apps sometimes provide more accurate timetable data. Google Translate's camera mode is also invaluable for reading menus and signs - it works seamlessly over your data connection.
No - this is a data-only eSIM for Japan. It does not include a local Japanese number for voice calls or SMS. For all communication needs, WhatsApp, FaceTime, LINE, and other VoIP apps work perfectly over your data connection. Note that LINE is Japan's most widely used messaging app, many locals, hotels, and restaurants communicate via LINE.