Japan eSIM — reviews & details
Japan 20GB 30Days (IIJ) · 20 GB · 30 days
620 reviews
Coverage & networks
- Japan NTT docomo 4G
Traveller reviews
Somchai D.
Portugal · Aug 2026
Exactly what I needed for travelling. Coverage was strong even outside the city. Made staying connected effortless.
James
eSIM TopUp Support
· 3 days ago Thanks for sharing, Somchai! Delighted the speeds worked well for you. We're here whenever you travel again. – James 💜
Kenji W.
Switzerland · Aug 2026
First time using an eSIM and it was painless in Japan. Ran hotspot to my laptop with no issues. Five stars from me.
Ken
eSIM TopUp Support
· 3 days ago So glad to hear this, Kenji! Love that you were online the moment you landed in Japan. Safe travels, and see you on your next trip! — Ken, eSIM TopUp Support
Katya H.
UAE · Aug 2026
First time using an eSIM and it was painless in Japan. Ran hotspot to my laptop with no issues. Would definitely buy again.
Sophie
eSIM TopUp Support
· 6 days ago Cheers, Katya! Wonderful to hear it worked smoothly in Japan. – Sophie, eSIM TopUp Support
Haruto T.
Australia · Aug 2026
Saved me a fortune on my holiday. Coverage was strong even outside the city.
Ken
eSIM TopUp Support
· 1 week ago So glad to hear this, Haruto! Love that you were online the moment you landed in Japan. Come back anytime! — Ken
Lucia W.
Poland · Aug 2026
Connected the moment I landed. Ran hotspot to my laptop with no issues.
Diego
eSIM TopUp Support
· 1 week ago Thank you for the kind words, Lucia! Love that you were online the moment you landed in Japan. Enjoy your journeys! – Diego, eSIM TopUp Support
Isabella N.
Egypt · Jul 2026
Install took me two tries but was fine after that.
Diego
eSIM TopUp Support
· 1 week ago So sorry to hear this, Isabella. We'd love the chance to make this right. Please contact us at esimtopup.io/support and we'll sort it out. – Diego, eSIM TopUp Support
Thomas D.
United Kingdom · Jul 2026
Did the job without any drama. Data lasted the whole trip with room to spare. Exactly as described — no surprises.
Mark
eSIM TopUp Support
· 1 week ago So glad to hear this, Thomas! Thrilled it made staying connected effortless. Safe travels, and see you on your next trip! – Mark 💜
Kenji C.
Spain · Jul 2026
Exactly what I needed for travelling. Activation was automatic when I arrived. Five stars from me.
Yuki
eSIM TopUp Support
· 1 week ago Thank you so much, Kenji! Wonderful to hear it worked smoothly in Japan. Enjoy your journeys! — Yuki, eSIM TopUp Support
Nguyen P.
Japan · Jul 2026
Exactly what I needed for travelling. Speeds were solid for maps, messaging and browsing.
Tom
eSIM TopUp Support
· 2 weeks ago Thank you for the kind words, Nguyen! So pleased it saved you from roaming bills. – Tom, eSIM TopUp Support
Arjun W.
Australia · Jul 2026
Worked fine but took a little while to connect at first. Streaming and video calls worked without buffering.
Laura
eSIM TopUp Support
· 2 weeks ago Thanks for the honest feedback, Arjun. We're constantly optimising speeds and coverage across Japan. Reach us anytime at esimtopup.io/support if we can help. — Laura, eSIM TopUp Support
Noah W.
Spain · Jul 2026
Did the job without any drama. Streaming and video calls worked without buffering. Exactly as described — no surprises.
Diego
eSIM TopUp Support
· 2 weeks ago Really appreciate this, Noah! Thrilled it made staying connected effortless. — Diego
Lucia T.
Egypt · Jul 2026
Did the job without any drama. Coverage was strong even outside the city. Would definitely buy again.
Priya
eSIM TopUp Support
· 2 weeks ago Thanks for sharing, Lucia! Wonderful to hear it worked smoothly in Japan. We're here whenever you travel again. – Priya 💜
Daniel P.
United Kingdom · Jul 2026
Exactly what I needed for travelling. The QR code arrived instantly by email.
Diego
eSIM TopUp Support
· 2 weeks ago Really appreciate this, Daniel! Love that you were online the moment you landed in Japan. We're here whenever you travel again. – Diego, eSIM TopUp Support
Hugo G.
Mexico · Jul 2026
Connected the moment I landed in Japan. Customer support answered my question quickly. Highly recommend for any traveller.
Yuki
eSIM TopUp Support
· 2 weeks ago Really appreciate this, Hugo! Thrilled it made staying connected effortless. Come back anytime! – Yuki 💜
Thomas B.
Indonesia · Jul 2026
Used this on my trip and it worked perfectly in Japan. Streaming and video calls worked without buffering. Five stars from me.
Yuki
eSIM TopUp Support
· 3 weeks ago Thanks for sharing, Thomas! Delighted the speeds worked well for you. Safe travels, and see you on your next trip! – Yuki, 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?