FlySimGo
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Fast Internet in Japan — Without Roaming Fees

Plans starting from $3.74

as low as $1.33/GB on larger plans

Set up in 60 seconds, connected the moment you land. High-speed internet on Rakuten, NTT Docomo and KDDI's 5G networks — no contracts, no bill shock, just the data you need. Running low? Top up instantly.

Destinations/Asia

Choose the Plan That Fits Your Trip

1 GB
7 Days
$3.74
$5.99
3 GB
30 Days
$8.08
$11.99
Most Popular
5 GB
30 Days
$11.30
$16.99
10 GB
30 Days
$17.44
$25.99
20 GB
30 Days
$26.67
$41.99

Why FlySimGo Is One of the Best eSIM Options for Japan

  • Rates as low as $1.33/GB on the 20GB plan.
  • Connects to NTT Docomo, KDDI, and Rakuten — Japan's major carriers — for reliable coverage from Tokyo to rural areas.
  • Install before you fly, connect the moment you land at Narita or Haneda.
  • No roaming fees, no contracts, no physical SIM swap.
  • Running low on data? Top up instantly without reinstalling.

Network Details

Valid in Japan
Rakuten5G
NTT Docomo5G
KDDI5G
KDDI Au5G
Top-up anytime
Buy additional data right from your dashboard without ever needing to reinstall the eSIM.
Install now, activate on arrival
Your plan's validity period only begins when your eSIM connects to a supported local network at your destination.
180-day activation window
You have 180 days from purchase to connect to a local network. This 180-day lifetime window resets automatically with every top-up.
Data-only plan
Experience high-speed internet optimized for travelers. Traditional Voice and SMS services are not included.
Personal hotspot included
Easily share your data connection with your other devices, family, or friends while on the go.

Your Connection Is Ready in 3 Steps

Say Goodbye to Airport Queues and 'Tourist Special' Packages

Long queues, confusing tariffs, the risk of losing your SIM during the swap — you don't have to deal with any of it. All you need is your phone and a few minutes.

Check Compatibility

Check eSIM compatibility for your device. iPhone XS (2018) and later, Samsung Galaxy S20 and later, and Google Pixel 3a (2019) and later all support eSIM. Your device must be carrier-unlocked.

Check compatibility

Pay & Install with One Tap

Choose your plan and pay securely via Stripe. You'll instantly receive a one-tap installation link by email — works on both iPhone and Android.

Switch On Data Roaming & Connect

Once you land, simply enable Data Roaming for your FlySimGo eSIM in your phone settings. Keep your home SIM's Data Roaming off — no surprise charges. Within minutes, your phone connects automatically to the local network.

View the full step-by-step eSIM setup guide

What Makes eSIM Different?

Compare FlySimGo e-SIM with traditional roaming and local SIM cards.

Featuree-SIMRoamingLocal SIM
Instant Delivery
No Roaming
Keep Your Number
No Physical SIM
No Contracts
4G/5G Speed

What is a Travel eSIM for Japan?

A travel eSIM allows you to access mobile data in Japan without needing a physical SIM card. Instead of paying expensive roaming charges from your home network, you can install a FlySimGo eSIM before departure and connect instantly when you arrive.

With a FlySimGo Japan travel eSIM, you can stay connected throughout your entire trip — whether you're navigating city streets, booking accommodation, or sharing moments from the road.

FlySimGo provides travel eSIM data for more than 200 destinations worldwide, helping travelers stay connected with reliable mobile internet wherever they travel.

Japan eSIM — Stay Connected Like a Local

A FlySimGo Japan eSIM costs just $3.74 — a fraction of what your home provider charges for international roaming. Install it before you fly and connect automatically the moment you land, with no queues, no paperwork, and no guesswork.

Navigate from Tokyo's Shibuya and Shinjuku districts, share moments from Kyoto's ancient temples and geisha districts, and stay in touch with friends and family throughout your entire trip — all without worrying about data costs or coverage gaps.

Japan eSIM Network Coverage

Your FlySimGo eSIM runs on Rakuten, NTT Docomo, and KDDI, delivering 5G speeds across Japan. Your device automatically latches onto the strongest available signal at all times.

From Tokyo's Shibuya and Shinjuku districts and Kyoto's ancient temples and geisha districts to Mount Fuji and the Fuji Five Lakes, your connection follows you seamlessly — whether you are in a city centre, a coastal resort, or a remote national park.

Frequently Asked Questions

What is the best eSIM for Japan?

FlySimGo offers prepaid eSIM data plans for Japan starting from $3.74 with access to Rakuten, NTT Docomo and KDDI 5G networks. The eSIM is delivered via an installation link by email, works on iPhone and Android, and sets up in a few minutes. Travelers can purchase and install it before departure without swapping their physical SIM.

How much does a Japan eSIM cost?

FlySimGo's Japan eSIM costs as low as $1.33 per GB on the 20 GB plan ($26.67).

Which network does FlySimGo use in Japan?

FlySimGo's eSIM for Japan connects to Rakuten, NTT Docomo and KDDI. Your phone automatically selects the best available signal among these networks, with no manual network selection required.

Does FlySimGo support 5G in Japan?

FlySimGo's eSIM for Japan supports 5G connectivity on supported local networks, in areas with 5G coverage. Actual speed depends on local network infrastructure at your specific location.

Can I install my Japan eSIM before I travel?

You can install the FlySimGo eSIM for Japan immediately after purchase — installing it alone does not start the plan. Validity begins only once you first use data on the local network at your destination, so buying and installing early doesn't waste any days.

When does my Japan eSIM validity start?

Validity for the FlySimGo Japan eSIM begins the moment your device first uses data on a supported local network — not from the purchase date, and not from installation alone. This means you can buy and install it days or weeks in advance without losing any validity time.

Can I keep my regular SIM and phone number while using FlySimGo in Japan?

On dual-SIM-capable devices, your physical SIM stays active for calls and SMS on your existing number while the FlySimGo eSIM for Japan handles mobile data. You can switch your default data line at any time in your device settings.

Can I use WhatsApp, Google Maps, and Uber with FlySimGo in Japan?

FlySimGo's eSIM for Japan provides a standard mobile data connection, so apps like WhatsApp, Google Maps, and Uber work the same way they would on any other mobile data connection — provided those services are available at your destination.

Can I top up my FlySimGo eSIM in Japan?

When your data for Japan runs low, you can buy an additional package without reinstalling the eSIM. You'll receive a low-data notification, and the top-up activates on the same eSIM.

Which phones are compatible with a Japan eSIM?

Compatibility depends on the device and carrier lock, not on the destination. Check under your device settings, Mobile/Cellular, to confirm eSIM support, and make sure the device is carrier-unlocked before installing the FlySimGo Japan eSIM.

What happens if I run out of data in Japan?

When your data runs low, FlySimGo notifies you, and you can purchase an additional package without reinstalling the eSIM. The top-up activates on the same Japan eSIM.

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Need help with your Japan e-SIM?

Our support team is available 24/7 to help you with activation or any connectivity issues.

Contact SupportView Setup Guide