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
Noah K.
Egypt · Jan 2026
Decent speeds, though slower than I expected in a few spots. Customer support answered my question quickly.
Laura
GotoeSIM Support
· 6 months ago Apologies for the trouble, Noah. This isn't the standard we aim for. Please contact us at esimtopup.io/support and we'll sort it out. – Laura, eSIM TopUp Support
Somchai V.
South Korea · Jan 2026
Connected the moment I landed. Topping up was straightforward when I needed more. Telling my friends about this.
Sophie
GotoeSIM Support
· 6 months ago Thank you so much, Somchai! Thrilled it made staying connected effortless. – Sophie 💜
Linh L.
Philippines · Jan 2026
Connected the moment I landed in Japan & South Korea. Ran hotspot to my laptop with no issues.
Diego
GotoeSIM Support
· 6 months ago Thanks for sharing, Linh! Love that you were online the moment you landed in Japan & South Korea. – Diego, eSIM TopUp Support
Daniel B.
France · Jan 2026
Connected the moment I landed. Signal held up well on trains and in rural areas. Would definitely buy again.
Sara
GotoeSIM Support
· 6 months ago So glad to hear this, Daniel! Great to know the setup was quick and easy. Enjoy your journeys! – Sara, eSIM TopUp Support
Elena W.
Portugal · Jan 2026
Used this on my trip and it worked perfectly in Japan & South Korea. Ran hotspot to my laptop with no issues. A must-have for international travel.
Tom
GotoeSIM Support
· 6 months ago Thanks a lot, Elena! Delighted the speeds worked well for you. — Tom, eSIM TopUp Support
Louis D.
India · Jan 2026
Great value compared to roaming charges. Speeds were solid for maps, messaging and browsing. Will use eSIM TopUp for my next trip for sure.
Laura
GotoeSIM Support
· 6 months ago Cheers, Louis! So happy the Japan & South Korea eSIM kept you connected. Wishing you many more connected adventures! – Laura, eSIM TopUp Support
Ava K.
Spain · Jan 2026
Solid overall, just wish there was a bit more data for the price. Data lasted the whole trip with room to spare.
Omar
GotoeSIM Support
· 6 months ago Thank you for taking the time, Ava. 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. – Omar, eSIM TopUp Support
Lucia H.
Poland · Jan 2026
Installed in minutes by scanning the QR code. Data lasted the whole trip with room to spare.
Sophie
GotoeSIM Support
· 6 months ago Thank you for the kind words, Lucia! Thrilled it made staying connected effortless. – Sophie, eSIM TopUp Support
Pablo N.
India · Jan 2026
First time using an eSIM and it was painless. I kept my normal number for calls while using this for data.
Omar
GotoeSIM Support
· 6 months ago Really appreciate this, Pablo! Delighted the speeds worked well for you. Come back anytime! — Omar
Sri K.
India · Jan 2026
Installed in minutes by scanning the QR code in Japan & South Korea. The QR code arrived instantly by email. Will use eSIM TopUp for my next trip for sure.
Tom
GotoeSIM Support
· 6 months ago So glad to hear this, Sri! Great to know the setup was quick and easy. — Tom
Marco H.
Vietnam · Jan 2026
Saved me a fortune on my holiday. Speeds were solid for maps, messaging and browsing. Highly recommend for any traveller.
Ken
GotoeSIM Support
· 6 months ago Thank you so much, Marco! Great to know the setup was quick and easy. Safe travels, and see you on your next trip! – Ken, eSIM TopUp Support
Ryan H.
Ireland · Jan 2026
Great value compared to roaming charges in Japan & South Korea. Streaming and video calls worked without buffering. Exactly as described — no surprises.
Omar
GotoeSIM Support
· 6 months ago Thank you for the kind words, Ryan! Great to know the setup was quick and easy. – Omar, eSIM TopUp Support
Mei W.
Canada · Jan 2026
No more hunting for a SIM card kiosk on arrival. Data lasted the whole trip with room to spare. Made staying connected effortless.
Anna
GotoeSIM Support
· 6 months ago Really appreciate this, Mei! So pleased it saved you from roaming bills. Enjoy your journeys! – Anna 💜
Hugo T.
New Zealand · Jan 2026
Honestly better than buying a local SIM at the airport. Activation was automatic when I arrived.
Ingrid
GotoeSIM Support
· 7 months ago Thank you so much, Hugo! So pleased it saved you from roaming bills. – Ingrid 💜
Noah P.
Ireland · Jan 2026
Did the job without any drama in Japan & South Korea. Coverage was strong even outside the city. Telling my friends about this.
Priya
GotoeSIM Support
· 7 months ago Thank you so much, Noah! So happy the Japan & South Korea eSIM kept you connected. We're here whenever you travel again. – Priya, eSIM TopUp Support
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?