Why use an eSIM in Japan?

Online the moment you land

Navigate Narita/Haneda, message your hotel, and book your first train without hunting for Wi-Fi.

Google Maps + trains work best with data

Japan’s rail network is amazing, but you’ll rely on live routes, platforms, and transfers all day.

Translate anything instantly

Menus, signs, announcements, and museum info with Google Translate camera mode.

Skip airport SIM & pocket WiFi hassle

No queues, no passport forms, no extra device to charge or return.

Choose Your eSIM

Tailored plans for all your needs on your trip.

Light traveler

Stay connected for essentials.

  • Google Maps & WhatsApp
  • Enough for a short trip with Wi-Fi
  • Top up anytime if you run low
3GB valid for 15 days
$6.99
Recomended

Medium user

The safe pick for most travelers.

  • Navigation, bookings, socials daily
  • Solid buffer for travel days
  • Track remaining data live
10GB valid for 30 days
$16.49

Nomad

Work-ready and worry-free.

  • Hotspot-friendly for laptop use
  • Built for heavy data days
  • Long validity for extended travel
50GB valid for 90 days
$52.99

How it works

Get your Japan eSIM

Select the option that matches your trip duration and data needs.

Install before you fly

Install on Wi-Fi using the QR code or tap-to-install link. Your normal SIM can stay in your phone.

Activate on arrival

When you land in Japan, enable the eSIM for data and turn on Data Roaming.

Stay in control

Check remaining data in your portal and top up if needed — WhatsApp stays on your usual number.

Japan eSIM plans

See Japan eSIM plans

  • Don't rely on Wi-Fi

    Be online, where ever you are in Japan.

  • Travel prepared

    Don't queue up at the airport to get your data. Buy now, activate when you land.

Japan eSIM for travellers (2026)

Japan is amazing — but you’ll rely on mobile data constantly for train navigation, translations, bookings and maps. With a Japan eSIM, you’re online as soon as you land (Narita, Haneda, Kansai), without airport queues or carrying pocket WiFi.

If you’re ready to pick your plan now:

View Japan eSIM plans

Choose the right Japan eSIM plan

Most travellers do best by matching trip length + daily habits:

  • Light use (maps + messaging): ~0.5–1 GB/day
  • Regular use (Maps + Translate + browsing): ~1–2 GB/day
  • Heavy use (social + uploads + video): ~2–3+ GB/day

If you’re doing lots of day trips (Kyoto ↔ Osaka, Hakone, Nara), you’ll be on Maps all day — choose a slightly bigger plan.

Get your Japan eSIM starting from $3.99

Japan eSIM Guides

Want do dig deeper? We have a full set of guides to help you learn more about eSIMS.

When to install and when it activates

stall your eSIM before you fly, so setup is stress-free and you’re not dependent on airport Wi-Fi.

  • Install anytime after purchase (takes a minute or two)
  • Activation starts when you connect in Japan (i.e., when the eSIM is turned on and reaches a Japanese network)

Tip: keep your home SIM ON until takeoff, then switch to the Japan eSIM when you land.

Japan eSIM installation guide

Keep WhatsApp and your main number

You don’t need a new number.

  • WhatsApp stays the same (your chats + number remain)
  • Keep your home SIM active for calls/SMS if you want (your carrier may charge roaming)
  • Use the Japan eSIM for data, WhatsApp, iMessage, Google Maps, etc.

Track usage live and top up anytime

Check how much data you’ve used in your TravelSim Asia dashboard and top up in seconds if you’re running low — no need to buy a new eSIM.

Works across Japan

Japan eSIM is built for travel across the country — not just Tokyo.

Works great in:
Tokyo • Kyoto • Osaka • Hiroshima • Fukuoka • Sapporo • Nagoya • Nara • Hakone • Mount Fuji area

…and it’s perfect for train travel (Shinkansen + local lines), where you’ll constantly check routes and platforms.

Get your 4G/5G Japan eSIM now →

Travelling beyond Japan?

If Japan is part of a bigger route (e.g., Japan + Korea, or Japan + Southeast Asia), consider a multi-country Asia eSIM so you don’t reinstall a new eSIM every border.

See Multi-Country eSIMS

FAQ — Japan eSIM

Do I need an app or an account?

No. You don’t need a separate app, and you don’t need to create an account to get started. You can manage your eSIM and view details through your portal.

We send you a a link to your portal when you get your eSIM. That's all you need.

Does my phone support eSIM?

Most phones from 2019+ support eSIM. iPhone XS/XR and newer do. Many recent Samsung and Google Pixel models do too. You can find out now, if you see “Add eSIM” / “Add Cellular Plan” in settings, you’re good.

When should I install my Japan eSIM?

Install it before you fly so you’re ready the moment you land. Installation takes a minute, and you can keep it turned off until arrival.

When does the plan start (activation)?

Your plan starts when the eSIM connects to a network in Japan (when you enable it and it reaches a Japanese network). Buying it doesn’t start the timer.

What if lose my portal link?

  1. Head to travelsimasia.com
  2. Click on the 'Check balance' button,
  3. Fill in the e-mail address you used to purchase your eSIM
  4. We send the portal link to your email adress!

Will I get 4G/5G in Japan?

You’ll typically get fast 4G in cities like Tokyo, Osaka and Kyoto. 5G may be available depending on location, network and your device. Speeds can vary by time and place.

Can I keep my WhatsApp number?

Yes. WhatsApp stays on your existing number. You can keep your home SIM active for calls/SMS if you want (your carrier may charge roaming) while using the Japan eSIM for data.

Can I use hotspot / tethering?

Yes, hotspot is supported on all our plans, so you can share data with a laptop or travel partner when needed.

Does it work outside Tokyo (Kyoto/Osaka/Hakone etc.)?

Yes — it’s designed for travel across Japan, including popular regions and day-trip areas. Coverage can be weaker in very remote/mountain areas, like with any carrier.

Can I top up if I run out of data?

Yes. You can top up anytime from your portal. It only takes a moment, and you don’t need to install a new eSIM.

How do I check remaining data and expiry?

Open your portal to see your remaining data and your plan’s expiry date. It’s the easiest way to stay in control while you travel.

What if the eSIM doesn’t work right away?

Quick fixes: enable data roaming on the eSIM, toggle airplane mode, restart your phone, and confirm the eSIM is set as your mobile data line. If it still won’t connect, contact support and we’ll help.

Japan eSIM guides