Japan eSIM — reviews & details
Japan 3GB/Day (IIJ) · 3 GB/day · 1 days
620 reviews
Coverage & networks
- Japan NTT docomo 4G
Traveller reviews
James T.
Egypt · Jun 2026
Good coverage in the city, a bit patchy in remote areas.
Tom
GotoeSIM Support
· 1 month ago Appreciate you sharing this, James. We're constantly optimising speeds and coverage across Japan. Reach us anytime at gotoesim.com/support if we can help. – Tom 💜
Chloe F.
Australia · Jun 2026
Good coverage in the city, a bit patchy in remote areas. Customer support answered my question quickly.
Tom
GotoeSIM Support
· 1 month ago Thank you for taking the time, Chloe. Good to hear it did the job, and we're working to make it even better. Reach us anytime at gotoesim.com/support if we can help. – Tom, GotoeSIM Support
Linh L.
Thailand · Apr 2026
Solid overall, just wish there was a bit more data for the price. Customer support answered my question quickly.
Grace
GotoeSIM Support
· 3 months ago Thank you for taking the time, Linh. Good to hear it did the job, and we're working to make it even better. Reach us anytime at gotoesim.com/support if we can help. — Grace
Max G.
Germany · Apr 2026
Install took me two tries but was fine after that. Topping up was straightforward when I needed more.
Anna
GotoeSIM Support
· 3 months ago Appreciate you sharing this, Max. Glad it mostly worked for you in Japan — we're always improving our coverage. Reach us anytime at gotoesim.com/support if we can help. — Anna
Somchai W.
South Korea · Mar 2026
Decent speeds, though slower than I expected in a few spots. Data lasted the whole trip with room to spare.
James
GotoeSIM Support
· 4 months ago Appreciate you sharing this, Somchai. Good to hear it did the job, and we're working to make it even better. Reach us anytime at gotoesim.com/support if we can help. – James 💜
Chloe L.
Australia · Jan 2026
Install took me two tries but was fine after that.
Sophie
GotoeSIM Support
· 6 months ago Appreciate you sharing this, Chloe. Good to hear it did the job, and we're working to make it even better. Reach us anytime at gotoesim.com/support if we can help. – Sophie 💜
Ethan K.
United States · Dec 2025
Good coverage in the city, a bit patchy in remote areas. Topping up was straightforward when I needed more.
James
GotoeSIM Support
· 6 months ago Thanks for the honest feedback, Ethan. Good to hear it did the job, and we're working to make it even better. Reach us anytime at gotoesim.com/support if we can help. – James, GotoeSIM Support
Mei N.
Thailand · Dec 2025
Install took me two tries but was fine after that.
Ken
GotoeSIM Support
· 7 months ago Thank you for taking the time, Mei. Good to hear it did the job, and we're working to make it even better. Reach us anytime at gotoesim.com/support if we can help. – Ken 💜
Giulia W.
Japan · Dec 2025
Decent speeds, though slower than I expected in a few spots. Topping up was straightforward when I needed more.
David
GotoeSIM Support
· 7 months ago Thanks for the honest feedback, Giulia. We're constantly optimising speeds and coverage across Japan. Reach us anytime at gotoesim.com/support if we can help. – David 💜
Max S.
Turkey · Dec 2025
Good coverage in the city, a bit patchy in remote areas. I kept my normal number for calls while using this for data.
Omar
GotoeSIM Support
· 7 months ago Thanks for the honest feedback, Max. Good to hear it did the job, and we're working to make it even better. Any questions, our team is at gotoesim.com/support. – Omar, GotoeSIM Support
Ji-woo S.
India · Dec 2025
Decent speeds, though slower than I expected in a few spots. Ran hotspot to my laptop with no issues.
Tom
GotoeSIM Support
· 7 months ago Thank you for taking the time, Ji-woo. We're constantly optimising speeds and coverage across Japan. Reach us anytime at gotoesim.com/support if we can help. – Tom, GotoeSIM Support
Andre D.
Netherlands · Nov 2025
Solid overall, just wish there was a bit more data for the price.
Sara
GotoeSIM Support
· 8 months ago Appreciate you sharing this, Andre. Good to hear it did the job, and we're working to make it even better. Any questions, our team is at gotoesim.com/support. — Sara, GotoeSIM Support
Beatriz L.
Australia · Nov 2025
Worked fine but took a little while to connect at first. Data lasted the whole trip with room to spare.
Diego
GotoeSIM Support
· 8 months ago Thanks for the honest feedback, Beatriz. We're constantly optimising speeds and coverage across Japan. Any questions, our team is at gotoesim.com/support. — Diego
Ryan B.
Egypt · Oct 2025
Solid overall, just wish there was a bit more data for the price. Activation was automatic when I arrived.
Ingrid
GotoeSIM Support
· 9 months ago Thanks for the honest feedback, Ryan. Good to hear it did the job, and we're working to make it even better. Any questions, our team is at gotoesim.com/support. — Ingrid
James T.
Switzerland · Oct 2025
Decent speeds, though slower than I expected in a few spots. Activation was automatic when I arrived.
Laura
GotoeSIM Support
· 9 months ago Appreciate you sharing this, James. We're constantly optimising speeds and coverage across Japan. Any questions, our team is at gotoesim.com/support. – Laura, GotoeSIM Support
Frequently asked questions
How much does the Japan eSIM cost?
The Japan 3GB/Day (IIJ) plan costs $3.30 for 3 GB/day over 1 days, paid once with no hidden fees.
How do I activate my Japan eSIM?
Scan the QR code in your phone settings (Cellular/Mobile → Add eSIM) or tap Install in the GotoeSIM app. Install on Wi-Fi before your trip; it activates when you arrive in Japan.
Will this eSIM work on my phone?
It works on any eSIM-compatible, carrier-unlocked phone — iPhone XS and newer, Google Pixel 3 and newer, and recent Samsung Galaxy models.
Can I keep my regular number?
Yes. The eSIM runs alongside your normal SIM, so you keep your number for calls and texts while using data in Japan.
Comments & questions
Diego T. · 4 days ago
Can I use it in nearby countries too?
For nearby countries, Diego, a regional plan may suit you better — happy to help you pick. – Omar, GotoeSIM Support
Sven F. · 1 month ago
Can I top up the same eSIM instead of buying a new one?
Yes Sven, you can top up the same eSIM anytime — no need to buy a new one. – Priya 💜
Liam K. · 1 month ago
Will this keep my WhatsApp active with my home number?
Your number stays active for WhatsApp, Liam! The eSIM just handles data. — Priya, GotoeSIM Support
Somchai B. · 4 months ago
Do I need to install it before I travel or after I arrive?
We recommend installing before you travel, Somchai, then it activates automatically on arrival. – Emma, GotoeSIM Support
Lea G. · 4 months ago
Thanks, installed with no problems on my Samsung.
It works great on modern Samsung phones, Lea! Add it via SIM manager and you're set. – Sara, GotoeSIM Support
Ingrid L. · 4 months ago
Great guide, the setup steps were really helpful.
Thanks Ingrid, that means a lot! Reach out anytime. — Anna, GotoeSIM Support
Zoe F. · 7 months ago
How do I check how much data I have left?
Your usage is tracked live in the app, Zoe — check My eSIMs anytime. — Tom, GotoeSIM Support
Lea T. · 7 months ago
Does the validity start on purchase or on first use?
The clock starts on first use in-country, Lea, so buying early is totally fine. – Sara, GotoeSIM Support
Hugo L. · 9 months ago
Can I use this for hotspot/tethering?
Tethering is supported, Hugo! Feel free to hotspot to your other devices. – Sophie, GotoeSIM Support
Lea C. · 9 months ago
Is roaming charged extra or is it all included?
No surprise fees, Lea! Roaming is part of the plan and never billed separately. – James, GotoeSIM Support
Nguyen D. · 10 months ago
How long does the QR code take to arrive after payment?
Your QR code arrives instantly, Nguyen — within seconds of payment, by email and in your account. – Laura, GotoeSIM Support
Lucia P. · 10 months ago
Is 5G supported or just 4G?
Yes Lucia, 5G is supported where the local network offers it, otherwise fast 4G. — Yuki