← All eSIM Travel Guides
Planning a trip and wondering how to stay online in Japan? A prepaid travel eSIM gets you data from $4.99, installed before you fly. No roaming bills, no hunting for a SIM shop after a long flight. This guide covers coverage, how much data you actually need, and what it costs.
Plans from$4.99 for 1GB / 7 days
Unlimited dailyfrom $1.99 per day
Network3G/4G/5G
DeliveryQR code by email, in minutes
Coverage in Japan
Mobile coverage in Japan is strong across cities and along the train network. Travel eSIMs here run on 3G/4G/5G networks. You can expect reliable data in Tokyo, Kyoto, Osaka, Hiroshima and Sapporo.
How much data do you need?
Most travelers use 1 to 2GB a day in Japan across maps, translation apps and photos. A one week trip is comfortable on 10GB. Heavy streamers on the shinkansen lean to 20GB or unlimited daily.
Arriving in Japan
Install your eSIM the night before you fly. Installation uses no data, and the plan only starts when you connect. Land at Narita, Haneda or Kansai and you are online before you reach the taxi line, while the airport SIM counters are still asking for your passport.
What a Japan eSIM costs
Looking for the best eSIM for Japan on price? Prepaid plans start at $4.99 for 1GB / 7 days, among the cheapest Japan eSIM plans you will find. Unlimited daily plans start at $1.99 per day. Compare that with typical roaming charges of $5 to $15 per day, or airport SIM counters that charge tourists a premium for the same local networks.
See our full mobile data price index →
Japan eSIM plans and prices
| Plan |
Validity |
Price |
| 1GB |
7 days |
$4.99 |
| 3GB |
15 days |
$5.99 |
| 5GB |
30 days |
$7.99 |
| 10GB |
30 days |
$12.99 |
| 20GB |
30 days |
$18.99 |
| 50GB |
30 days |
$27.99 |
| Unlimited (1GB/day full speed) |
per day |
$1.99 |
| Unlimited (2GB/day full speed) |
per day |
$2.99 |
| Unlimited (5GB/day full speed) |
per day |
$4.99 |
| Unlimited (10GB/day full speed) |
per day |
$6.99 |
Prices update with our live catalog, so the table above is what you will actually pay today.
How to install your Japan eSIM
1
Buy online and your QR code arrives by email within minutes. No app and no account needed.
2
Scan the QR code from your phone settings the night before you fly. Installation uses no data and the plan does not start yet.
3
When you land in Japan, turn the eSIM on and enable data roaming for it. You are online before the seatbelt sign is off.
eSIM vs roaming vs airport SIM
Roaming with your home carrier is the easy default and the expensive one: typical daily passes run $5 to $15 per day, and pay-as-you-go rates are far worse.
Airport SIM counters sell the same local networks at a tourist markup, after a queue, with a passport check. Your physical SIM also leaves your phone, which is where home SIMs get lost.
Pocket WiFi rentals mean one more device to charge, carry and return on your last day.
A prepaid Japan eSIM from $4.99 skips all three: nothing to return, nothing to lose, and your number stays active.
Calls and messaging
Travel eSIMs are data-only: your number stays on your home SIM for texts and verification codes, and WhatsApp, iMessage and LINE keep working over data exactly as they do at home.
Japan eSIM questions, answered
How much data do I need in Japan?
Most travelers use 1 to 2GB a day in Japan across maps, translation apps and photos. A one week trip is comfortable on 10GB. Heavy streamers on the shinkansen lean to 20GB or unlimited daily.
Is the unlimited Japan eSIM really unlimited?
Daily plans give you a full speed allowance every day and unlimited data at reduced speed after it. You are never cut off, and the allowance resets each morning.
Will an eSIM work on my phone?
Any recent iPhone (XS and newer) and most recent Android flagships support eSIM. Dial *#06# and if you see an EID number, your phone is ready.
When should I buy and install it?
Buy any time before your trip and install the night before you fly. The plan only starts when you connect in Japan, so installing early costs you nothing.
Do I keep my number and WhatsApp?
Yes. The eSIM only carries data. Your home SIM stays in the phone for calls and texts, and WhatsApp keeps working on your existing number.
Ready to go?
Buy your Japan eSIMInstant QR code by email. Works on iPhone and Android. Installed in about two minutes.Browse all destination guides →
