Japan eSIM — reviews & details
Japan 20GB 30Days (IIJ) · 20 GB · 30 days
620 reviews
Coverage & networks
- Japan NTT docomo 4G
Traveller reviews
Ji-woo M.
Germany · May 2026
Installed in minutes by scanning the QR code. Streaming and video calls worked without buffering.
Sophie
GotoeSIM Support
· 2 months ago Thanks for sharing, Ji-woo! So pleased it saved you from roaming bills. Come back anytime! – Sophie, eSIM TopUp Support
Aisha F.
Netherlands · May 2026
Honestly better than buying a local SIM at the airport. Topping up was straightforward when I needed more.
Sophie
GotoeSIM Support
· 3 months ago Thank you so much, Aisha! Delighted the speeds worked well for you. Wishing you many more connected adventures! — Sophie, eSIM TopUp Support
Fatima D.
Spain · May 2026
Saved me a fortune on my holiday. Customer support answered my question quickly. Exactly as described — no surprises.
James
GotoeSIM Support
· 3 months ago Cheers, Fatima! Delighted the speeds worked well for you. Wishing you many more connected adventures! – James, eSIM TopUp Support
Zoe K.
South Korea · May 2026
Installed in minutes by scanning the QR code. The QR code arrived instantly by email.
Laura
GotoeSIM Support
· 3 months ago Thanks for sharing, Zoe! Great to know the setup was quick and easy. – Laura, eSIM TopUp Support
Ji-woo M.
Poland · Apr 2026
Exactly what I needed for travelling in Japan. Signal held up well on trains and in rural areas. Highly recommend for any traveller.
Mark
GotoeSIM Support
· 3 months ago Cheers, Ji-woo! Delighted the speeds worked well for you. We're here whenever you travel again. – Mark 💜
Liam S.
Indonesia · Apr 2026
No more hunting for a SIM card kiosk on arrival. Signal held up well on trains and in rural areas. Zero regrets.
Tom
GotoeSIM Support
· 3 months ago Thank you for the kind words, Liam! Wonderful to hear it worked smoothly in Japan. Enjoy your journeys! – Tom, eSIM TopUp Support
Sven H.
Poland · Apr 2026
Bought it the night before my flight — smooth process. Ran hotspot to my laptop with no issues.
Omar
GotoeSIM Support
· 3 months ago Thanks for sharing, Sven! Wonderful to hear it worked smoothly in Japan. Safe travels, and see you on your next trip! – Omar 💜
Louis W.
Netherlands · Apr 2026
No more hunting for a SIM card kiosk on arrival in Japan. Signal held up well on trains and in rural areas.
Emma
GotoeSIM Support
· 4 months ago Thank you so much, Louis! Delighted the speeds worked well for you. Wishing you many more connected adventures! – Emma, eSIM TopUp Support
Louis T.
Switzerland · Apr 2026
Did the job without any drama in Japan. Setup instructions in the app were clear and simple. Great experience overall.
Omar
GotoeSIM Support
· 4 months ago Thanks a lot, Louis! Love that you were online the moment you landed in Japan. – Omar, eSIM TopUp Support
Sofia V.
Netherlands · Apr 2026
Connected the moment I landed. Customer support answered my question quickly. Great experience overall.
Mark
GotoeSIM Support
· 4 months ago Really appreciate this, Sofia! Great to know the setup was quick and easy. Enjoy your journeys! – Mark, eSIM TopUp Support
Aisha L.
Sweden · Apr 2026
Did the job without any drama in Japan. The QR code arrived instantly by email.
Mark
GotoeSIM Support
· 4 months ago Thanks for sharing, Aisha! Delighted the speeds worked well for you. Come back anytime! – Mark, eSIM TopUp Support
Hugo K.
Switzerland · Mar 2026
Saved me a fortune on my holiday. Topping up was straightforward when I needed more.
Omar
GotoeSIM Support
· 4 months ago So glad to hear this, Hugo! Great to know the setup was quick and easy. Enjoy your journeys! — Omar
Priya W.
United States · Mar 2026
Exactly what I needed for travelling. Activation was automatic when I arrived. Zero regrets.
Tom
GotoeSIM Support
· 4 months ago Thanks for sharing, Priya! Wonderful to hear it worked smoothly in Japan. Enjoy your journeys! – Tom 💜
Giulia G.
New Zealand · Mar 2026
Exactly what I needed for travelling in Japan. Data lasted the whole trip with room to spare. Exactly as described — no surprises.
Grace
GotoeSIM Support
· 4 months ago So glad to hear this, Giulia! Great to know the setup was quick and easy. Come back anytime! – Grace, eSIM TopUp Support
Lucia N.
Malaysia · Mar 2026
Exactly what I needed for travelling in Japan. Streaming and video calls worked without buffering. Telling my friends about this.
Sophie
GotoeSIM Support
· 4 months ago Thanks for sharing, Lucia! Wonderful to hear it worked smoothly in Japan. Wishing you many more connected adventures! — Sophie
Frequently asked questions
How much does the Japan eSIM cost?
The Japan 20GB 30Days (IIJ) plan costs $12.30 for 20 GB over 30 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 eSIM TopUp 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
Katya K. · 2 months ago
Is 5G supported or just 4G?
Katya V. · 7 months ago
Thanks, installed with no problems on my Samsung.
Beatriz C. · 8 months ago
Is roaming charged extra or is it all included?
Lea B. · 8 months ago
Will this keep my WhatsApp active with my home number?
Kenji R. · 9 months ago
Do I need to install it before I travel or after I arrive?
Zoe V. · 9 months ago
How do I check how much data I have left?
Grace C. · 10 months ago
Great guide, the setup steps were really helpful.
Camila M. · 11 months ago
Can I use it in nearby countries too?
Mateo B. · 11 months ago
Which networks does this connect to?
Beatriz R. · 11 months ago
Does the validity start on purchase or on first use?
Sarah V. · 11 months ago
How long does the QR code take to arrive after payment?
Thomas N. · 1 year ago
Can I top up the same eSIM instead of buying a new one?