Japan & South Korea eSIM — reviews & details
Japan & South Korea 10GB 30days · 10 GB · 30 days
620 reviews
Coverage & networks
- Japan KDDI/au 5G
- South Korea SKTelecom 5G LG Uplus 5G
Traveller reviews
Thomas P.
Portugal · Aug 2026
Good coverage in the city, a bit patchy in remote areas. Setup instructions in the app were clear and simple.
Emma
GotoeSIM Support
· 1 week ago Thank you for taking the time, Thomas. 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
Sven G.
Switzerland · Jul 2026
Good coverage in the city, a bit patchy in remote areas.
Ken
GotoeSIM Support
· 3 weeks ago Thank you for taking the time, Sven. Good to hear it did the job, and we're working to make it even better. Any questions, our team is at esimtopup.io/support. — Ken
Priya P.
Sweden · Jul 2026
Solid overall, just wish there was a bit more data for the price.
James
GotoeSIM Support
· 4 weeks ago Thanks for the honest feedback, Priya. We're constantly optimising speeds and coverage across Japan & South Korea. Any questions, our team is at esimtopup.io/support. – James, eSIM TopUp Support
Hugo H.
Saudi Arabia · Jun 2026
Worked fine but took a little while to connect at first.
Priya
GotoeSIM Support
· 1 month ago Thanks for the honest feedback, Hugo. Good to hear it did the job, and we're working to make it even better. Any questions, our team is at esimtopup.io/support. – Priya, eSIM TopUp Support
Somchai K.
Turkey · Jun 2026
Good coverage in the city, a bit patchy in remote areas. Ran hotspot to my laptop with no issues.
Anna
GotoeSIM Support
· 1 month ago Thank you for taking the time, Somchai. 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. – Anna, eSIM TopUp Support
Max R.
Poland · May 2026
Decent speeds, though slower than I expected in a few spots. Topping up was straightforward when I needed more.
Grace
GotoeSIM Support
· 2 months ago Thank you for taking the time, Max. 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. — Grace, eSIM TopUp Support
Mateo R.
Germany · May 2026
Decent speeds, though slower than I expected in a few spots.
Grace
GotoeSIM Support
· 2 months ago Thanks for the honest feedback, Mateo. 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. — Grace
Anna K.
Malaysia · May 2026
Decent speeds, though slower than I expected in a few spots.
Ingrid
GotoeSIM Support
· 2 months ago Thank you for taking the time, Anna. Good to hear it did the job, and we're working to make it even better. Any questions, our team is at esimtopup.io/support. — Ingrid, eSIM TopUp Support
Liam W.
Canada · May 2026
Worked fine but took a little while to connect at first.
Priya
GotoeSIM Support
· 3 months ago Thanks for the honest feedback, Liam. We're constantly optimising speeds and coverage across Japan & South Korea. Any questions, our team is at esimtopup.io/support. – Priya 💜
Liam S.
New Zealand · Apr 2026
Good coverage in the city, a bit patchy in remote areas.
Omar
GotoeSIM Support
· 3 months ago Appreciate you sharing this, Liam. We're constantly optimising speeds and coverage across Japan & South Korea. Reach us anytime at esimtopup.io/support if we can help. — Omar
Isabella R.
France · Apr 2026
Decent speeds, though slower than I expected in a few spots.
Mark
GotoeSIM Support
· 4 months ago Appreciate you sharing this, Isabella. 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. — Mark, eSIM TopUp Support
Lucia F.
Poland · Apr 2026
Install took me two tries but was fine after that. Customer support answered my question quickly.
Anna
GotoeSIM Support
· 4 months ago Appreciate you sharing this, Lucia. We're constantly optimising speeds and coverage across Japan & South Korea. Any questions, our team is at esimtopup.io/support. — Anna, eSIM TopUp Support
Zoe T.
France · Mar 2026
Decent speeds, though slower than I expected in a few spots. Signal held up well on trains and in rural areas.
Laura
GotoeSIM Support
· 4 months ago Thanks for the honest feedback, Zoe. We're constantly optimising speeds and coverage across Japan & South Korea. Reach us anytime at esimtopup.io/support if we can help. — Laura, eSIM TopUp Support
Emma N.
Portugal · Feb 2026
Solid overall, just wish there was a bit more data for the price. Activation was automatic when I arrived.
Diego
GotoeSIM Support
· 6 months ago Appreciate you sharing this, Emma. Good to hear it did the job, and we're working to make it even better. Any questions, our team is at esimtopup.io/support. — Diego, eSIM TopUp Support
Nguyen D.
United Kingdom · Feb 2026
Install took me two tries but was fine after that. Ran hotspot to my laptop with no issues.
Tom
GotoeSIM Support
· 6 months ago Appreciate you sharing this, Nguyen. We're constantly optimising speeds and coverage across Japan & South Korea. Reach us anytime at esimtopup.io/support if we can help. — Tom, eSIM TopUp Support
Frequently asked questions
How much does the Japan & South Korea eSIM cost?
The Japan & South Korea 10GB 30days plan costs $19.20 for 10 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
Lea T. · 4 weeks ago
Can I top up the same eSIM instead of buying a new one?
Mohammed H. · 1 month ago
How long does the QR code take to arrive after payment?
Ji-woo R. · 3 months ago
Is roaming charged extra or is it all included?
Budi C. · 3 months ago
Can I use this for hotspot/tethering?
Arjun S. · 4 months ago
Does the validity start on purchase or on first use?
Sven R. · 5 months ago
Which networks does this connect to?
Sarah D. · 7 months ago
Can I use it in nearby countries too?
Mei B. · 7 months ago
Thanks, installed with no problems on my Samsung.
Wei T. · 7 months ago
Is 5G supported or just 4G?
Wei D. · 9 months ago
How do I check how much data I have left?
Isabella H. · 9 months ago
Great guide, the setup steps were really helpful.
Fatima K. · 1 year ago
Does this work on an iPhone 13?