eSIM Japan: Prepaid Data Plans
Japan eSIM plans start at $3.99 for 1 GB (14 days). 77 plans from 7 vetted providers on SoftBank, au (KDDI), NTT docomo, and Rakuten, hotspot on every plan. Buy online, install and top up in one MobiMatter app. Prices updated ·
Japan eSIM at a glance
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Networks used by Japan eSIMs
Each plan connects to the networks listed on its page, so you choose your carrier before you buy. Coverage varies by area: a listed network does not guarantee signal everywhere.
Frequently Asked Questions
Do I need an eSIM for Japan, or is pocket WiFi better?
You need neither, but most visitors want mobile data for maps and trains. An eSIM is the simplest: nothing to collect, carry, charge or return, and it works on your own phone from landing. Pocket WiFi suits groups sharing one connection, but everyone has to stay near the device. Free Wi-Fi is common in cities but patchy elsewhere.
Reviewed Oct 6, 2026 · Source
How much data do I need for a trip to Japan?
For maps, messaging and browsing, a common rule of thumb is 0.5 to 1 GB a day, so 10 GB covers about a week and 20 GB about two weeks. Video uses far more: Netflix lists up to 3 GB per hour in HD. If you stream or share your connection, choose a larger or unlimited plan.
Reviewed Oct 6, 2026 · Source
Should I buy my Japan eSIM before I fly or at the airport?
Buy it online before you fly, so you can install it at home over Wi-Fi and have data the moment you land. Japan's main airports have free Wi-Fi and counters selling SIM cards and renting pocket WiFi, but an eSIM installed in advance saves queueing on arrival.
Reviewed Oct 6, 2026 · Source
What is the cheapest eSIM for Japan?
The cheapest Japan eSIM on MobiMatter costs $3.99 for 1 GB, valid for 14 days. Prices come live from 7 vetted providers and change often; the price on this page is the current one.
Is it worth getting an eSIM for Japan?
For most tourists and business travellers, yes, if your phone supports eSIM. Japan plans start at $3.99 for 1 GB, and you install the eSIM before you fly, so you have data when you land, without queuing for a tourist SIM at the airport. If your home plan already covers Japan at no extra cost, you may not need one.
Which networks do Japan eSIMs use?
Japan eSIMs on MobiMatter run on SoftBank, au (KDDI), NTT docomo, and Rakuten. Every plan names its network, so you can choose the carrier you prefer before you buy.
Which eSIM is best for Japan?
Our best plan for Japan right now is 50 GB for 30 days at $29.99 from IIJ. We rank plans on quality and value for money, and this one comes first in the list.
Is there an unlimited data eSIM for Japan?
Yes. Unlimited data plans for Japan start at $10.99. Many unlimited plans slow down after a daily high-speed allowance, so check the fair-use terms on the plan page before you buy.
Do Japan eSIMs support 5G and hotspot?
5G is available on 38 plans for Japan, where the local network has 5G coverage; the others use 4G/LTE. Hotspot (tethering) works on every plan, so you can share your data with other devices.
Does a Japan eSIM come with a phone number?
Most travel eSIMs, including most Japan plans, are data-only and have no local number. You keep your usual number on your main SIM for calls, texts and WhatsApp. Plans that include a number or minutes say so on the plan page.
How it works
- 1
Checkout using secure payment methods
Get your eSIM by email within seconds.
- 2
Install eSIM
Instantly get your eSIM and configure it in your eSIM compatible device
- 3
Enjoy high speed connectivity
Once eSIM is configured, you can enjoy high speed roaming data connectivity
Why get your Japan eSIM from MobiMatter
All your eSIMs in one app
Buy, install and top up every eSIM in the MobiMatter app, and check how much data you have left at any time.
Choose your network
MobiMatter shows which network each plan uses, so you choose your carrier before you buy. Pick from 77 plans from 7 vetted providers with the data and price that fit your trip.
24/7 support
Our support team is available 24/7, before and after you buy, for every eSIM you get from MobiMatter.
What our customers say
5.0
For our trip to China, South Korea, and Japan, my wife and I bought two 12GB data packages and used them without any problems. Their prices are much more reasonable compared to competitors; I definitely recommend them.
AAbdullah Gokhan Demir
Play Store5.0
I used it for the first time with my wife during our trip to Japan and Korea, and I didn't experience any connection problems. The internet was fast enough in both Japan and Korea, and I was satisfied with the app. I recommend it.
Translated from Turkish
DDinçer Altınok
Play Store5.0
Perfect in my Japan Trip and Cheaper
AAs de ases
Play Store5.0
Using this service more than 2 years and very happy with it! Recommending it for anyone!
DDush@m
App Store5.0
I recently used their service and I’m extremely satisfied. The package lasted longer than expected, and I was able to make great use of it across the Asian region. They also have the fastest support team — very responsive and incredibly detailed in the information they provide.
DDiana_Diana_$
App Store5.0
I faced some issues today with my eSIM, and they fixed it at the same time. I used this application on all my trips and they are great. By the way, they have very competitive prices
AAnssam d
App Store5.0
I had some trouble getting my internet connection to work, and the MobiMatter support team helped me SO much! They responded incredibly quickly, were very patient, and guided me through everything until the issue was completely resolved. I really appreciate how helpful and professional they were. Excellent customer support and a great experience overall. Highly recommend MobiMatter! ❤️
MMarnickname
App Store5.0
the app has good prices, every e sim works fine, and it's easy to use
IIason Fotopoulos
Play Store5.0
Always works for me in many countries and has competitive prices!
TTorontoPoutine
App Store5.0
"I think this is the fourth time I'm using it abroad. There was only one issue, but the support was very quick. It feels like they are waiting at the screen for fast help. The problem was identified in seconds and a new QR code was sent. Thank you very much."
Translated from Turkish
MMhmtclik
App Store5.0
Really great esim app, bought fee esims via MobiMatter and they were awesome. Also big shoutout to their support team they respond in seconds! Keep up the good work.
AAlexBatar
App Store5.0
Best price guaranteed! Instant activation! The package I chose worked in four countries without any problems, three of them in the non-SEE area.
SSebastian Petra
Play Store
Japan eSIM guides
Aug 7, 2025 — 10 min read
Best eSIM for Japan: A Comprehensive Guide for Travelers
Japan, a captivating blend of ancient traditions and cutting-edge technology, is a dream destination for travelers worldwide. From the bustling streets of Tokyo to the serene temples of Kyoto and the scenic landscapes of Hokkaido, every journey is enriched by seamless digital access. Whether you're navigating complex transit systems, translating menus, or sharing experiences in real time, staying connected is essential, which is why choosing the best eSIM for Japan can make your trip significant...
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Aug 11, 2026 — 9 min read
The Ultimate 14-Day Japan and South Korea Itinerary for 2026
Tokyo, Kyoto, Seoul, and Jeju Island form 2026's most searched Asia travel corridor, and this 14-day route covers all four without wasted travel days. It pairs a realistic day-by-day plan with the connectivity side most guides skip, including how to stay online during the Japan to South Korea ferry or flight switch using a regional eSIM instead of juggling two separate SIM cards. Why This Japan Korea Route is Trending for Summer 2026 Search interest in combined Japan and Korea trips has overt...
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Mar 30, 2026 — 21 min read
Japan's Sakura Grand Finale: Chasing the Last Bloom in Tohoku & Hokkaido (2026)
I. The 2026 Northern Forecast: Your Second Chance Has Arrived Right now, as you read this, something extraordinary is unfolding across the northern reaches of Japan. Tokyo's cherry blossoms those famously fleeting clouds of pink that flood Ueno Park and Shinjuku Gyoen with a million tourists have already peaked and are letting go. The petals are falling, the crowds are dispersing, and another Instagram-saturated Japan cherry blossom season is quietly closing its curtain in the south. But here'...
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