Japan eSIM guide
The best eSIM for Japan travel
No pocket wifi to rent and return. Buy an eSIM before you fly, scan the QR, and connect in about a minute in Tokyo, Kyoto or Osaka. Instant delivery and help from Mia in your language.
Why travelers pick AskMia for Japan
Tokyo, Kyoto, Osaka and beyond
Coverage in major cities, on the Shinkansen routes, and in popular regions such as Hokkaido and Okinawa.
4G LTE and 5G
Plans run on major local networks in Japan, on 5G where the network offers it. Your phone picks the strongest signal automatically.
AI assistant Mia
Not sure what you need? Tell Mia your route and days and get a recommendation in seconds. 140+ languages.
No roaming shock
Prepaid data plans with a fixed price. No per-MB fees, no bill surprises after the trip.
Install before you fly
Buy, receive the QR code by email, install it in your phone's Settings. Land connected, no airport SIM kiosks.
Top up any time
Running low? Add data to the same eSIM from the app or by asking Mia - no new QR code needed.
Japan eSIM data plans
Current starting prices for the most popular sizes. Exact prices appear at checkout.
| Data | Validity | Price | Best for |
|---|---|---|---|
| 1 GB | 3 days | from $6.01 | Short stopover |
| 3 GB | 7 days | from $7.86 | City break |
| 5 GB | 7 days | from $10.77 | 1-week trip |
| 5 GB | 30 days | from $11.37 | Longer travel + maps |
| 10 GB | 30 days | from $17.01 | Streaming, video calls |
| 20 GB | 30 days | from $27.59 | Work remotely, tether |
Prices in USD, excluding taxes. Applicable tax is shown at checkout.
See live plans
- Japan from $10.77
Japan eSIM FAQ
Do I need an eSIM for Japan?
If your carrier charges roaming in Japan, a prepaid eSIM is usually the cheapest way to stay connected. Install it before you fly and get data the moment you land, without hunting for a local SIM shop.
How much does an eSIM for Japan cost?
AskMia plans for Japan start at $6.01 for 1 GB / 3 days. A one-week trip with 5 GB costs from $10.77, and 10 GB for 30 days costs from $17.01 (USD, excluding taxes).
Is an eSIM better than pocket wifi in Japan?
An eSIM lives inside your phone: nothing to charge, carry or return at the airport, and no deposit. Pocket wifi can be shared by a group, but for most travelers an eSIM is simpler and cheaper.
Will I keep my phone number?
Yes. The eSIM adds a second data line. Your primary SIM keeps calls and SMS while the eSIM handles data, so you avoid roaming charges without losing your number.
How do I install the eSIM?
After payment you get an email with a QR code. Open your phone's Settings, add the eSIM by scanning it, and you are ready. Installation takes about a minute and can be done before you fly.
Is my phone compatible?
Most phones from 2019 onward support eSIM: iPhone XS and newer, Pixel 3 and newer, and most recent Samsung and Android flagships. Your phone must be carrier-unlocked. Type *#06# on the dial pad: if an EID is shown, your phone supports eSIM.
What if I need help while in Japan?
Chat with Mia any time. She speaks 140+ languages and can top up your plan, switch regions, or troubleshoot activation in seconds.