Mobile data for Japan on an eSIM you install by scanning a QR code. Keep your own SIM for calls and texts.
| Coverage | Japan |
| Data | 21 GB |
| Validity | 7 days, starting when the eSIM first connects |
| Price per GB | $0.59/GB |
| Type | Data only — your usual number keeps working |
| Renewal | None. This is a one-off purchase. |
Heading to Japan for about a week? This plan gives you 21 GB of data across 7 days for $12.34, paid once with no subscription behind it.
Spread evenly, that is about 3 GB a day. It is one pool for the whole 7 days rather than a daily cap, so a quiet day leaves more for a busy one.
That is a generous allowance: enough to post videos, make regular video calls, or run your laptop off the phone as a hotspot for email and light work.
Per gigabyte it works out at $0.59/GB, or $1.76 per day of cover.
Roughly what the plan covers, if you spend it all on one thing (in total):
| Maps | about 4,300 hours |
| Browsing | about 360 hours |
| Social | about 72 hours |
| Video calls | about 72 hours |
| SD video | about 31 hours |
Estimates only — real use depends on the app, the quality setting and the network. Downloading maps and playlists on Wi-Fi before you go stretches any plan much further.
Of the 55 plans we sell for Japan, prices start at $0.48, so this one sits in the upper half.
On price per gigabyte it ranks 3rd of 27 fixed-data plans. The best value is 50 GB for 30 days at $0.54/GB.
Need more? 30 GB for 10 days costs $18.42 — $6.08 more.
Staying longer? The cheapest plan that lasts beyond 7 days is 2 GB for 15 days, at $1.92.
Yes, with room to spare for video and photo sharing. It works out at about 3 GB a day if spread evenly.
When the eSIM first connects to a network in Japan, not when you buy it. So you can buy and install it before you travel without the clock starting.
The eSIM stops using mobile data until you add more. You can buy more data in the Go2Calls app whenever you need it.
Yes. This eSIM carries data only. Your usual SIM stays in the phone for calls and texts, and you choose which line uses mobile data.
No. It is a one-off purchase of $12.34. When the data or the 7 days run out, it simply ends — no card is kept on file to charge again.
Most iPhones from the XS onward and most recent Android flagships do, but the phone also needs to be carrier-unlocked. On iPhone, look under Settings › General › About for "Digital SIM" or "Available SIM"; on Android, search Settings for "eSIM".
Buy the plan in the Go2Calls app and the eSIM is ready straight away. On your phone, add a new eSIM and scan the QR code the app shows you — on iPhone under Settings › Mobile Data › Add eSIM, on Android under Settings › Network › SIMs. When you arrive in Japan, switch mobile data to the new eSIM and turn on data roaming for that line only. Your usual SIM keeps handling calls and texts.
