Quick answer: The best eSIM for Japan is a data-only travel eSIM you install before you fly, sized to your trip. Our Japan eSIM gives you high speed internet that is hotspot ready, with Total, Daily or Unlimited plans for 3, 5, 7, 10, 15 or 30 days. Your QR code is delivered instantly by email.
Whether it is your first trip to Tokyo or your fifth to Osaka, Kyoto or Hokkaido, staying online makes everything easier: train routes, restaurant queues, translation apps and sharing photos with home. This guide explains how a Japan eSIM works, which plan type to choose, how to install it on iPhone and Android, and answers the questions travellers ask most.
Why use an eSIM in Japan?
An eSIM is a digital SIM built into your phone. Instead of buying a physical SIM card at the airport or renting a device, you scan a QR code and you are ready to go.
- Set up before you fly. Buy online in Singapore dollars, get your QR code by email in minutes, and install it at home.
- Keep your home SIM. Your Singapore number stays in the phone, so you can still receive bank OTP SMS if your home plan allows it while you use the eSIM for data.
- No extra device to carry. Everything runs on your phone, and every plan is hotspot ready if you need to share data with a laptop or a travel buddy.
- No queues on arrival. Switch the eSIM on when you land and head straight out of the airport.
Japan eSIM plan types explained
Every Japan eSIM plan is high speed internet and hotspot ready. Plans are data only, so there is no local phone number, calls or SMS. Pick the plan type that suits how you travel.
Total data plans
One data bucket for the whole trip: 3GB, 5GB, 10GB or 20GB, valid for 3, 5, 7, 10, 15 or 30 days. Great if your usage goes up and down, for example light days touring and heavier days on the train uploading photos.
Daily data plans
A fresh allowance every day: 500MB/day, 1GB/day, 2GB/day or 3GB/day, for 3, 5, 7, 10, 15 or 30 days. Ideal if you like a steady daily budget and do not want to worry about using everything up early in the trip.
Unlimited plans
Available for 3, 5, 7, 10 or 15 days. You get high-speed data first, and after the high-speed allowance runs out you can still use the internet at a slower speed, so you are never cut off. It is best for heavy users, but note that it is not unlimited high-speed data.
Which plan should I pick?
A typical Japan trip from Singapore means lots of train hopping and maps. For a 5 to 7 day city trip, a Daily 1GB/day or a 5GB to 10GB Total plan suits most travellers. If you stream, video call or share hotspot with family, look at 2GB/day, 3GB/day or Unlimited. Not sure? Check the options and current prices on the Japan eSIM page.
How to install your eSIM on iPhone and Android
First, check that your phone supports eSIM and is carrier unlocked. Then install the eSIM on Wi-Fi before you leave Singapore.
iPhone
- Open the email with your QR code on another screen, or print it.
- Go to Settings > Mobile Service (or Cellular) and tap Add eSIM.
- Choose Use QR Code and scan the code from your email.
- Label the new line (for example "Japan") and choose your Singapore line for calls and iMessage if you like.
- When you land, set the eSIM as your Mobile Data line and turn on Data Roaming for it.
Android (Samsung, Google Pixel and others)
- Go to Settings > Connections > SIM manager (Samsung) or Settings > Network & internet > SIMs (Pixel).
- Tap Add eSIM or Download a SIM instead, then scan the QR code from your email.
- Name the eSIM so it is easy to spot.
- When you arrive, choose the eSIM for mobile data and turn on roaming for that line.
Menu names vary a little by phone model and software version, but the steps are the same.
Tips for staying connected in Japan
- Install early, activate on arrival. Install at home on Wi-Fi, then switch the eSIM on for data when you land.
- Turn off data roaming on your Singapore line so you are not charged by your home provider by mistake.
- Do not delete the eSIM during your trip. Most eSIM QR codes can only be installed once.
- Download offline maps and translation packs before you go as a backup.
- Use hotspot smartly. Sharing data with a laptop uses data faster, so pick a bigger Total, Daily or Unlimited plan if you plan to work on the go.
- Need a local number? Our plans are data only, so use WhatsApp, Telegram or other internet calling apps to stay in touch.
Japan eSIM FAQ
Which eSIM is best for Japan for tourists?
The best eSIM for Japan for most tourists is a data plan that matches your trip length and usage. Our Japan eSIM gives you high speed internet with Total, Daily or Unlimited plans for 3 to 30 days, it is hotspot ready, and the QR code arrives by email so you can set it up before you fly.
What is the best eSIM for Japan from Singapore?
If you are flying from Singapore, pick a plan you can install at home before you leave. Our Japan eSIM is sold in Singapore dollars, and the QR code is delivered instantly by email.
Is there a Japan eSIM with unlimited data?
Yes. Our Unlimited Japan plans run for 3, 5, 7, 10 or 15 days. You get high-speed data first, and after the high-speed allowance runs out you can still use the internet at a slower speed.
Does the Japan eSIM come with a phone number?
No. Our Japan eSIM is data only, with no local phone number, calls or SMS. You can still call and message over the internet with apps like WhatsApp, Telegram or LINE.
How do I install the eSIM?
Scan the QR code from your email in your phone settings (Settings > Mobile Service on iPhone, or Settings > Connections > SIM manager on most Android phones), then turn on data roaming for the eSIM line when you arrive.
Can I share the data with hotspot?
Yes. All our plans are hotspot ready, so you can share your connection with a laptop or a travel buddy.
When should I install the eSIM?
Install it at home on Wi-Fi a day or two before you fly, and switch it on when you land. Keep the QR email handy in case you need it again.
Ready for your trip? Get your Japan eSIM and receive your QR code by email in minutes.
