Japan eSIM — reviews & details
Japan 3GB 30Days (IIJ) · 3 GB · 30 days
620 reviews
Coverage & networks
- Japan NTT docomo 4G
Traveller reviews
Hana M.
Philippines · Jan 2026
Good coverage in the city, a bit patchy in remote areas.
James
eSIM TopUp Support
· 6 months ago So sorry to hear this, Hana. That's not the experience we want for Japan. Reach our team at esimtopup.io/support so we can help right away. – James, eSIM TopUp Support
Lucas L.
Netherlands · Jan 2026
Super easy to set up before I flew out in Japan. Streaming and video calls worked without buffering. Would definitely buy again.
Omar
eSIM TopUp Support
· 6 months ago Thank you so much, Lucas! So happy the Japan eSIM kept you connected. Wishing you many more connected adventures! – Omar, eSIM TopUp Support
Thomas D.
Spain · Jan 2026
Saved me a fortune on my holiday. Signal held up well on trains and in rural areas. Would definitely buy again.
David
eSIM TopUp Support
· 6 months ago Thanks a lot, Thomas! Wonderful to hear it worked smoothly in Japan. Safe travels, and see you on your next trip! — David, eSIM TopUp Support
Ava S.
France · Jan 2026
Used this on my trip and it worked perfectly. Activation was automatic when I arrived. Great experience overall.
Emma
eSIM TopUp Support
· 6 months ago Thank you so much, Ava! Love that you were online the moment you landed in Japan. Safe travels, and see you on your next trip! – Emma 💜
Sarah B.
Australia · Jan 2026
Super easy to set up before I flew out in Japan. Customer support answered my question quickly. Highly recommend for any traveller.
Mark
eSIM TopUp Support
· 6 months ago So glad to hear this, Sarah! So happy the Japan eSIM kept you connected. — Mark
Ananya G.
Mexico · Jan 2026
Exactly what I needed for travelling. Coverage was strong even outside the city. Will use eSIM TopUp for my next trip for sure.
Yuki
eSIM TopUp Support
· 7 months ago Thank you so much, Ananya! Love that you were online the moment you landed in Japan. Come back anytime! — Yuki
Sven H.
Canada · Jan 2026
Decent speeds, though slower than I expected in a few spots. Signal held up well on trains and in rural areas.
Sophie
eSIM TopUp Support
· 7 months ago Thanks for the honest feedback, Sven. Glad it mostly worked for you in Japan — we're always improving our coverage. Any questions, our team is at esimtopup.io/support. — Sophie
Thomas N.
Philippines · Jan 2026
Bought it the night before my flight — smooth process. Customer support answered my question quickly. Would definitely buy again.
Ingrid
eSIM TopUp Support
· 7 months ago Thanks for sharing, Thomas! Thrilled it made staying connected effortless. Wishing you many more connected adventures! — Ingrid, eSIM TopUp Support
Sri R.
United States · Jan 2026
Did the job without any drama. Topping up was straightforward when I needed more. A must-have for international travel.
Sophie
eSIM TopUp Support
· 7 months ago Thank you for the kind words, Sri! Thrilled it made staying connected effortless. – Sophie 💜
Nguyen H.
Singapore · Jan 2026
Great value compared to roaming charges. Setup instructions in the app were clear and simple. A must-have for international travel.
Anna
eSIM TopUp Support
· 7 months ago Really appreciate this, Nguyen! Wonderful to hear it worked smoothly in Japan. Come back anytime! – Anna 💜
Viktor C.
Ireland · Jan 2026
Exactly what I needed for travelling in Japan. Customer support answered my question quickly. Will use eSIM TopUp for my next trip for sure.
Mark
eSIM TopUp Support
· 7 months ago Thank you for the kind words, Viktor! So pleased it saved you from roaming bills. Safe travels, and see you on your next trip! — Mark
Olivia W.
Thailand · Jan 2026
Did the job without any drama. Coverage was strong even outside the city. Great experience overall.
Emma
eSIM TopUp Support
· 7 months ago Thank you for the kind words, Olivia! Love that you were online the moment you landed in Japan. Wishing you many more connected adventures! — Emma, eSIM TopUp Support
Chloe P.
Turkey · Jan 2026
Saved me a fortune on my holiday. Streaming and video calls worked without buffering. A must-have for international travel.
Tom
eSIM TopUp Support
· 7 months ago So glad to hear this, Chloe! Wonderful to hear it worked smoothly in Japan. — Tom, eSIM TopUp Support
Olivia N.
United Kingdom · Dec 2025
Bought it the night before my flight — smooth process. Coverage was strong even outside the city. A must-have for international travel.
David
eSIM TopUp Support
· 7 months ago Thanks for sharing, Olivia! Wonderful to hear it worked smoothly in Japan. Safe travels, and see you on your next trip! – David 💜
Ingrid P.
South Korea · Dec 2025
Honestly better than buying a local SIM at the airport in Japan. Streaming and video calls worked without buffering. A must-have for international travel.
Sophie
eSIM TopUp Support
· 7 months ago Thanks a lot, Ingrid! So happy the Japan eSIM kept you connected. Enjoy your journeys! — Sophie
Frequently asked questions
How much does the Japan eSIM cost?
The Japan 3GB 30Days (IIJ) plan costs $2.70 for 3 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
Pablo L. · 2 weeks ago
How long does the QR code take to arrive after payment?
Priya H. · 1 month ago
How do I check how much data I have left?
Mateo M. · 2 months ago
Will this keep my WhatsApp active with my home number?
Giulia H. · 3 months ago
Does this work on an iPhone 13?
Omar H. · 5 months ago
Is roaming charged extra or is it all included?
Ingrid F. · 6 months ago
Thanks, installed with no problems on my Samsung.
Haruto V. · 6 months ago
Can I use it in nearby countries too?
Noah D. · 7 months ago
Can I use this for hotspot/tethering?
James S. · 7 months ago
Do I need to install it before I travel or after I arrive?
Katya W. · 8 months ago
Can I top up the same eSIM instead of buying a new one?
Noah V. · 8 months ago
Does the validity start on purchase or on first use?
Liam V. · 10 months ago
Which networks does this connect to?