eSIM Japan: Prepaid Data Plans
Japan eSIM plans start at $3.99 for 1 GB; our top plan for Japan alone is 50 GB for 30 days at $29.99 (IIJ), the top multi-country one 35 GB at $27.99 (3 countries). Here a plan for Japan alone costs less per GB than any multi-country plan (77 plans from 7 vetted providers).
Japan eSIM at a glance
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Your next trip.
Connected.
Choose your travel eSIM and manage it in the MobiMatter app.
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 plan that works in Japan is a multi-country one: $3.99 for 1 GB, valid for 14 days. The cheapest plan for Japan alone is 3 GB for 5 days at $4.49. Prices come live from 7 vetted providers and change often.
Is it worth getting an eSIM for Japan?
For most travellers, yes, if your phone supports eSIM. Japan plans start at $3.99 for 1 GB, and the longest lasts 365 days, which suits long stays and repeat visits. 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; 5G plans are available on SoftBank, au (KDDI), NTT docomo, and Rakuten. SoftBank carries the most plans. Each plan names its network, so you choose your carrier before you buy.
Which eSIM is best for Japan?
For Japan alone, our top plan right now is 50 GB for 30 days at $29.99 from IIJ. If Japan is one stop of several, the top multi-country plan is 35 GB for 30 days at $27.99 from TSimTech, covering 3 countries.
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
Mentions JapanI 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
Mentions JapanFor 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
Mentions JapanPerfect in my Japan Trip and Cheaper
AAs de ases
Play Store5.0
MobiMatters came highly recommended in family-oriented travel groups on social networks, when I was researching on travel eSIMs for Iceland. The first package I started with was a US + Europe - it was easy to activate before leaving home (and verifying), and then continue on landing in Reykjavik. Unthinkable speeds (given we are used to Verizon and TMobile in the US) - over 400 Mbps on the Fast app! Unlimited tethering options allowed me to use across my MacBook and phone, as well as share across the family with the kids on iPads and phones. Navigation on Google and Waze was aa breeze with the constant high speed data connectivity. Our plans did not support phones (we knew this) but with WhatsApp and FaceTime allowing audio and video calls we never felt the need for basic phone service. Customer service on email was responsive and helpful when I wanted to understand how top-ups work. Highly recommend MobiMatters - I’m on my third top-up as we speak!
KKundan Sen
App Store5.0
It was awesome and seamless. I was connected with fast speed internet throughout my stay in Canada
EEsther Koomson Esq
Play Store5.0
"I have been using it in every country I have visited for years and have never had any problems. The prices are always very reasonable."
Translated from Turkish
DDidemkrdnz
App Store5.0
"I have used several programs, this one is the best in terms of price and packages."
Translated from Arabic
OObaid saif
App Store5.0
This is the app where I found comprehensive and reasonably priced packages. I've been using it without any problems for about 2 years.
EErdem Mutlu
Play Store5.0
A very fast, reliable, and fantastic internet provider. I got internet that I can use for one month in 3 countries (Thailand, Singapore, Malaysia) for a total of 696 TL (14.99$).
BBerkcan Özturan
Play Store5.0
Great APP!!! Lots of options, something for everyone!!! 5*
TTomasz Tabor
Play Store5.0
I bought the service for the second time for a trip to Turkey. I had some trouble finding the right settings on my iphone. Support helped out immediately and everything was working well when I arrived in Turkey.
AAlex_M01
App Store5.0
Solved in a few minutes. It’s a really trustworthy app
PPedro Maldini
App Store
Japan eSIM guides
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Best eSIM for Japan: A Comprehensive Guide for Travelers
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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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