Japan eSIM — reviews & details
Japan 20GB 30Days (IIJ) · 20 GB · 30 days
620 reviews
Coverage & networks
- Japan NTT docomo 4G
Traveller reviews
Mei T.
UAE · Jan 2026
No more hunting for a SIM card kiosk on arrival. Signal held up well on trains and in rural areas.
Priya
GotoeSIM Support
· 6 months ago Really appreciate this, Mei! Great to know the setup was quick and easy. — Priya
Hana R.
France · Jan 2026
Great value compared to roaming charges. Coverage was strong even outside the city. A must-have for international travel.
Mark
GotoeSIM Support
· 6 months ago Thanks for sharing, Hana! Wonderful to hear it worked smoothly in Japan. Come back anytime! — Mark
Diego K.
Germany · Jan 2026
Honestly better than buying a local SIM at the airport. I kept my normal number for calls while using this for data. Five stars from me.
Diego
GotoeSIM Support
· 6 months ago Thank you for the kind words, Diego! Thrilled it made staying connected effortless. — Diego, eSIM TopUp Support
Carlos V.
United Kingdom · Jan 2026
Bought it the night before my flight — smooth process. Setup instructions in the app were clear and simple.
David
GotoeSIM Support
· 6 months ago Cheers, Carlos! Thrilled it made staying connected effortless. — David
Somchai F.
Sweden · Jan 2026
Used this on my trip and it worked perfectly in Japan. Signal held up well on trains and in rural areas. Exactly as described — no surprises.
Ingrid
GotoeSIM Support
· 6 months ago Thank you so much, Somchai! So pleased it saved you from roaming bills. – Ingrid 💜
Max K.
Sweden · Jan 2026
Installed in minutes by scanning the QR code. Signal held up well on trains and in rural areas. Would definitely buy again.
Ingrid
GotoeSIM Support
· 7 months ago Thank you for the kind words, Max! So pleased it saved you from roaming bills. — Ingrid, eSIM TopUp Support
Mei S.
Mexico · Jan 2026
Did the job without any drama. Customer support answered my question quickly. Telling my friends about this.
Tom
GotoeSIM Support
· 7 months ago Thanks for sharing, Mei! Love that you were online the moment you landed in Japan. Enjoy your journeys! – Tom 💜
Wei H.
Thailand · Jan 2026
Saved me a fortune on my holiday. Setup instructions in the app were clear and simple. Highly recommend for any traveller.
Sara
GotoeSIM Support
· 7 months ago So glad to hear this, Wei! So pleased it saved you from roaming bills. Enjoy your journeys! – Sara, eSIM TopUp Support
Louis S.
Sweden · Jan 2026
Bought it the night before my flight — smooth process. Ran hotspot to my laptop with no issues. Five stars from me.
Sophie
GotoeSIM Support
· 7 months ago Thank you so much, Louis! Wonderful to hear it worked smoothly in Japan. Enjoy your journeys! – Sophie, eSIM TopUp Support
Lucas L.
United Kingdom · Jan 2026
Used this on my trip and it worked perfectly. Customer support answered my question quickly.
Sophie
GotoeSIM Support
· 7 months ago Thanks for sharing, Lucas! So pleased it saved you from roaming bills. Enjoy your journeys! – Sophie, eSIM TopUp Support
Hugo V.
United States · Dec 2025
Used this on my trip and it worked perfectly. Setup instructions in the app were clear and simple.
Yuki
GotoeSIM Support
· 7 months ago Cheers, Hugo! So happy the Japan eSIM kept you connected. – Yuki 💜
Giulia H.
Philippines · Dec 2025
Did the job without any drama in Japan. Speeds were solid for maps, messaging and browsing. Would definitely buy again.
Mark
GotoeSIM Support
· 7 months ago Thanks for sharing, Giulia! Great to know the setup was quick and easy. – Mark 💜
Nguyen V.
Netherlands · Dec 2025
Exactly what I needed for travelling. Activation was automatic when I arrived in Japan.
Priya
GotoeSIM Support
· 7 months ago Really appreciate this, Nguyen! Love that you were online the moment you landed in Japan. – Priya 💜
Lucas D.
Turkey · Dec 2025
Great value compared to roaming charges. The QR code arrived instantly by email. Will use eSIM TopUp for my next trip for sure.
Laura
GotoeSIM Support
· 7 months ago Really appreciate this, Lucas! Thrilled it made staying connected effortless. Wishing you many more connected adventures! — Laura
Sophia N.
Portugal · Dec 2025
Saved me a fortune on my holiday. Signal held up well on trains and in rural areas. Telling my friends about this.
Mark
GotoeSIM Support
· 7 months ago Really appreciate this, Sophia! So happy the Japan eSIM kept you connected. Safe travels, and see you on your next trip! – Mark, eSIM TopUp Support
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?