Japan eSIM — reviews & details
Japan 20GB 30Days (IIJ) · 20 GB · 30 days
620 reviews
Coverage & networks
- Japan NTT docomo 4G
Traveller reviews
Ethan M.
Netherlands · Apr 2026
Super easy to set up before I flew out in Japan. Speeds were solid for maps, messaging and browsing. Five stars from me.
Emma
GotoeSIM Support
· 3 months ago Thank you so much, Ethan! Delighted the speeds worked well for you. Come back anytime! – Emma, eSIM TopUp Support
Beatriz C.
New Zealand · Apr 2026
Saved me a fortune on my holiday in Japan. Speeds were solid for maps, messaging and browsing. Telling my friends about this.
Laura
GotoeSIM Support
· 3 months ago Thank you for the kind words, Beatriz! Love that you were online the moment you landed in Japan. We're here whenever you travel again. — Laura
Lea M.
Netherlands · Apr 2026
Installed in minutes by scanning the QR code. Streaming and video calls worked without buffering. Would definitely buy again.
Ken
GotoeSIM Support
· 3 months ago Thanks a lot, Lea! So happy the Japan eSIM kept you connected. – Ken, eSIM TopUp Support
James R.
United States · Apr 2026
Super easy to set up before I flew out. Setup instructions in the app were clear and simple. Zero regrets.
James
GotoeSIM Support
· 3 months ago Cheers, James! Wonderful to hear it worked smoothly in Japan. Safe travels, and see you on your next trip! – James, eSIM TopUp Support
Viktor W.
Thailand · Apr 2026
First time using an eSIM and it was painless. Topping up was straightforward when I needed more. Five stars from me.
Tom
GotoeSIM Support
· 3 months ago Thank you for the kind words, Viktor! Wonderful to hear it worked smoothly in Japan. — Tom, eSIM TopUp Support
Max H.
Portugal · Apr 2026
Did the job without any drama. Topping up was straightforward when I needed more. Zero regrets.
Ingrid
GotoeSIM Support
· 3 months ago So glad to hear this, Max! Great to know the setup was quick and easy. Come back anytime! – Ingrid, eSIM TopUp Support
Max C.
Turkey · Apr 2026
Connected the moment I landed. Signal held up well on trains and in rural areas. Telling my friends about this.
James
GotoeSIM Support
· 3 months ago Thanks a lot, Max! Thrilled it made staying connected effortless. Come back anytime! – James 💜
Chloe P.
Sweden · Apr 2026
Used this on my trip and it worked perfectly in Japan. Speeds were solid for maps, messaging and browsing.
Omar
GotoeSIM Support
· 3 months ago So glad to hear this, Chloe! Love that you were online the moment you landed in Japan. Safe travels, and see you on your next trip! — Omar, eSIM TopUp Support
Sophia W.
Spain · Apr 2026
Super easy to set up before I flew out. Customer support answered my question quickly. Exactly as described — no surprises.
Yuki
GotoeSIM Support
· 3 months ago Thank you for the kind words, Sophia! So happy the Japan eSIM kept you connected. — Yuki
Lea D.
Singapore · Apr 2026
First time using an eSIM and it was painless. Speeds were solid for maps, messaging and browsing. A must-have for international travel.
Laura
GotoeSIM Support
· 3 months ago Thank you for the kind words, Lea! Wonderful to hear it worked smoothly in Japan. Safe travels, and see you on your next trip! — Laura
Ava V.
Thailand · Apr 2026
Super easy to set up before I flew out. I kept my normal number for calls while using this for data. A must-have for international travel.
James
GotoeSIM Support
· 4 months ago Thanks a lot, Ava! So pleased it saved you from roaming bills. We're here whenever you travel again. – James 💜
Ava G.
Sweden · Apr 2026
Honestly better than buying a local SIM at the airport. I kept my normal number for calls while using this for data. Would definitely buy again.
Ken
GotoeSIM Support
· 4 months ago Thanks a lot, Ava! So happy the Japan eSIM kept you connected. Enjoy your journeys! — Ken, eSIM TopUp Support
Elena C.
Spain · Apr 2026
Super easy to set up before I flew out. Coverage was strong even outside the city. Highly recommend for any traveller.
Laura
GotoeSIM Support
· 4 months ago Thank you so much, Elena! So pleased it saved you from roaming bills. Come back anytime! — Laura, eSIM TopUp Support
Katya V.
Egypt · Apr 2026
Installed in minutes by scanning the QR code in Japan. Topping up was straightforward when I needed more.
Yuki
GotoeSIM Support
· 4 months ago Thank you so much, Katya! Great to know the setup was quick and easy. We're here whenever you travel again. – Yuki 💜
Noah T.
Poland · Apr 2026
First time using an eSIM and it was painless. Data lasted the whole trip with room to spare. Exactly as described — no surprises.
Sophie
GotoeSIM Support
· 4 months ago Thanks a lot, Noah! Great to know the setup was quick and easy. Wishing you many more connected adventures! — Sophie, 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?