Japan & South Korea eSIM — reviews & details
Japan & South Korea 5GB 30Days · 5 GB · 30 days
620 reviews
Coverage & networks
- Japan KDDI/au 5G
- South Korea SKTelecom 5G LG Uplus 5G
Traveller reviews
Beatriz C.
Indonesia · Jan 2026
Install took me two tries but was fine after that. Activation was automatic when I arrived.
David
GotoeSIM Support
· 7 months ago Thanks for the honest feedback, Beatriz. Glad it mostly worked for you in Japan & South Korea — we're always improving our coverage. Any questions, our team is at esimtopup.io/support. – David, eSIM TopUp Support
Lucia G.
Singapore · Jan 2026
Honestly better than buying a local SIM at the airport. Coverage was strong even outside the city.
Ingrid
GotoeSIM Support
· 7 months ago Thank you for the kind words, Lucia! So pleased it saved you from roaming bills. Enjoy your journeys! – Ingrid 💜
Beatriz L.
Ireland · Jan 2026
Installed in minutes by scanning the QR code in Japan & South Korea. Signal held up well on trains and in rural areas. Highly recommend for any traveller.
Tom
GotoeSIM Support
· 7 months ago Thank you for the kind words, Beatriz! Thrilled it made staying connected effortless. Wishing you many more connected adventures! – Tom 💜
Omar H.
Turkey · Jan 2026
Used this on my trip and it worked perfectly. Topping up was straightforward when I needed more. Five stars from me.
Priya
GotoeSIM Support
· 7 months ago Thank you so much, Omar! Thrilled it made staying connected effortless. – Priya 💜
Mei V.
Brazil · Jan 2026
Exactly what I needed for travelling. Topping up was straightforward when I needed more. Made staying connected effortless.
David
GotoeSIM Support
· 7 months ago Thanks for sharing, Mei! Wonderful to hear it worked smoothly in Japan & South Korea. Come back anytime! — David
Sarah V.
Australia · Jan 2026
No more hunting for a SIM card kiosk on arrival in Japan & South Korea. I kept my normal number for calls while using this for data. Made staying connected effortless.
Ken
GotoeSIM Support
· 7 months ago Thank you for the kind words, Sarah! Great to know the setup was quick and easy. Come back anytime! – Ken, eSIM TopUp Support
Mateo L.
Sweden · Jan 2026
Great value compared to roaming charges. Speeds were solid for maps, messaging and browsing. Telling my friends about this.
Anna
GotoeSIM Support
· 7 months ago Thanks for sharing, Mateo! Love that you were online the moment you landed in Japan & South Korea. Enjoy your journeys! – Anna, eSIM TopUp Support
Max W.
Poland · Jan 2026
Connected the moment I landed. Activation was automatic when I arrived.
Grace
GotoeSIM Support
· 7 months ago Thanks a lot, Max! Thrilled it made staying connected effortless. We're here whenever you travel again. — Grace, eSIM TopUp Support
Ryan C.
Saudi Arabia · Jan 2026
Did the job without any drama. Ran hotspot to my laptop with no issues. Would definitely buy again.
Ken
GotoeSIM Support
· 7 months ago Thank you for the kind words, Ryan! Wonderful to hear it worked smoothly in Japan & South Korea. Safe travels, and see you on your next trip! – Ken 💜
Emma H.
UAE · Jan 2026
Did the job without any drama. I kept my normal number for calls while using this for data.
Mark
GotoeSIM Support
· 7 months ago Really appreciate this, Emma! So happy the Japan & South Korea eSIM kept you connected. — Mark, eSIM TopUp Support
Grace R.
Ireland · Dec 2025
Great value compared to roaming charges in Japan & South Korea. Setup instructions in the app were clear and simple. Exactly as described — no surprises.
Omar
GotoeSIM Support
· 7 months ago Thanks for sharing, Grace! Thrilled it made staying connected effortless. Wishing you many more connected adventures! – Omar, eSIM TopUp Support
Sven H.
New Zealand · Dec 2025
Solid overall, just wish there was a bit more data for the price.
Ken
GotoeSIM Support
· 7 months ago Appreciate you sharing this, Sven. We're constantly optimising speeds and coverage across Japan & South Korea. Reach us anytime at esimtopup.io/support if we can help. — Ken, eSIM TopUp Support
Yuki F.
Canada · Dec 2025
Saved me a fortune on my holiday in Japan & South Korea. Streaming and video calls worked without buffering. Made staying connected effortless.
Mark
GotoeSIM Support
· 7 months ago So glad to hear this, Yuki! Wonderful to hear it worked smoothly in Japan & South Korea. – Mark 💜
Diego W.
Philippines · Dec 2025
Honestly better than buying a local SIM at the airport. The QR code arrived instantly by email.
Laura
GotoeSIM Support
· 7 months ago Cheers, Diego! Delighted the speeds worked well for you. — Laura, eSIM TopUp Support
Fatima G.
Philippines · Dec 2025
Connected the moment I landed. Coverage was strong even outside the city. Great experience overall.
Laura
GotoeSIM Support
· 7 months ago So glad to hear this, Fatima! Love that you were online the moment you landed in Japan & South Korea. Enjoy your journeys! — Laura
Frequently asked questions
How much does the Japan & South Korea eSIM cost?
The Japan & South Korea 5GB 30Days plan costs $9.75 for 5 GB over 30 days, paid once with no hidden fees.
How do I activate my Japan & South Korea 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 & South Korea.
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 & South Korea.
Comments & questions
Emma M. · 2 months ago
Can I use this for hotspot/tethering?
Andre H. · 2 months ago
Is 5G supported or just 4G?
Elena H. · 3 months ago
Thanks, installed with no problems on my Samsung.
Arjun N. · 4 months ago
How do I check how much data I have left?
Lucia L. · 4 months ago
Will this keep my WhatsApp active with my home number?
Mohammed P. · 6 months ago
Which networks does this connect to?
Katya C. · 7 months ago
Can I use it in nearby countries too?
Liam G. · 7 months ago
Can I top up the same eSIM instead of buying a new one?
Emma C. · 7 months ago
Great guide, the setup steps were really helpful.
Katya K. · 9 months ago
How long does the QR code take to arrive after payment?
Lea N. · 1 year ago
Does the validity start on purchase or on first use?
Marco N. · 1 year ago
Do I need to install it before I travel or after I arrive?