Japan eSIM — reviews & details
Japan 3GB 30Days (IIJ) · 3 GB · 30 days
620 reviews
Coverage & networks
- Japan NTT docomo 4G
Traveller reviews
Chloe S.
Ireland · Aug 2026
Decent speeds, though slower than I expected in a few spots. Customer support answered my question quickly.
Emma
eSIM TopUp Support
· 4 days 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 esimtopup.io/support if we can help. – Emma, eSIM TopUp Support
Ingrid G.
Ireland · Aug 2026
Bought it the night before my flight — smooth process. Speeds were solid for maps, messaging and browsing. Would definitely buy again.
Sophie
eSIM TopUp Support
· 1 week ago Thank you so much, Ingrid! Delighted the speeds worked well for you. Come back anytime! – Sophie, eSIM TopUp Support
Lea K.
Singapore · Aug 2026
Honestly better than buying a local SIM at the airport in Japan. Topping up was straightforward when I needed more. Zero regrets.
David
eSIM TopUp Support
· 1 week ago Thank you so much, Lea! Thrilled it made staying connected effortless. Wishing you many more connected adventures! – David 💜
Wei K.
Saudi Arabia · Jul 2026
Saved me a fortune on my holiday. Speeds were solid for maps, messaging and browsing. Would definitely buy again.
Grace
eSIM TopUp Support
· 1 week ago So glad to hear this, Wei! Great to know the setup was quick and easy. Safe travels, and see you on your next trip! – Grace 💜
Somchai H.
Spain · Jul 2026
Saved me a fortune on my holiday. Ran hotspot to my laptop with no issues.
Omar
eSIM TopUp Support
· 1 week ago Thank you so much, Somchai! So pleased it saved you from roaming bills. Safe travels, and see you on your next trip! — Omar, eSIM TopUp Support
Priya R.
India · Jul 2026
Exactly what I needed for travelling in Japan. Setup instructions in the app were clear and simple. Telling my friends about this.
Ken
eSIM TopUp Support
· 1 week ago Thanks for sharing, Priya! Love that you were online the moment you landed in Japan. Enjoy your journeys! — Ken
Ava G.
France · Jul 2026
Exactly what I needed for travelling. Setup instructions in the app were clear and simple. Highly recommend for any traveller.
Emma
eSIM TopUp Support
· 1 week ago Thank you for the kind words, Ava! Love that you were online the moment you landed in Japan. Enjoy your journeys! — Emma
Ingrid G.
Japan · Jul 2026
Installed in minutes by scanning the QR code. Data lasted the whole trip with room to spare. A must-have for international travel.
Ken
eSIM TopUp Support
· 1 week ago Thank you for the kind words, Ingrid! So happy the Japan eSIM kept you connected. Enjoy your journeys! — Ken, eSIM TopUp Support
Haruto C.
Singapore · Jul 2026
Did the job without any drama in Japan. The QR code arrived instantly by email. Exactly as described — no surprises.
Yuki
eSIM TopUp Support
· 1 week ago Thank you so much, Haruto! Love that you were online the moment you landed in Japan. We're here whenever you travel again. – Yuki 💜
Carlos K.
Malaysia · Jul 2026
No more hunting for a SIM card kiosk on arrival. Speeds were solid for maps, messaging and browsing. Telling my friends about this.
Yuki
eSIM TopUp Support
· 2 weeks ago Really appreciate this, Carlos! Delighted the speeds worked well for you. Safe travels, and see you on your next trip! – Yuki 💜
Ingrid F.
Spain · Jul 2026
Great value compared to roaming charges. Ran hotspot to my laptop with no issues. Great experience overall.
Grace
eSIM TopUp Support
· 2 weeks ago Thanks a lot, Ingrid! Wonderful to hear it worked smoothly in Japan. — Grace, eSIM TopUp Support
Budi W.
Vietnam · Jul 2026
Installed in minutes by scanning the QR code. Topping up was straightforward when I needed more. Highly recommend for any traveller.
Grace
eSIM TopUp Support
· 2 weeks ago So glad to hear this, Budi! Great to know the setup was quick and easy. Wishing you many more connected adventures! — Grace
Anna C.
Spain · Jul 2026
Solid overall, just wish there was a bit more data for the price.
Ingrid
eSIM TopUp Support
· 2 weeks ago Thank you for taking the time, Anna. Good to hear it did the job, and we're working to make it even better. Reach us anytime at esimtopup.io/support if we can help. – Ingrid, eSIM TopUp Support
Ji-woo B.
France · Jul 2026
Connected the moment I landed. Ran hotspot to my laptop with no issues. Zero regrets.
Tom
eSIM TopUp Support
· 2 weeks ago Really appreciate this, Ji-woo! So happy the Japan eSIM kept you connected. – Tom 💜
Priya N.
New Zealand · Jul 2026
Did the job without any drama in Japan. Streaming and video calls worked without buffering. Five stars from me.
Diego
eSIM TopUp Support
· 2 weeks ago So glad to hear this, Priya! Thrilled it made staying connected effortless. Enjoy your journeys! — Diego
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. · 2 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?