Japan & South Korea eSIM — reviews & details
Japan & South Korea 1GB/Day · 1 GB/day · 1 days
620 reviews
Coverage & networks
- Japan KDDI/au 5G
- South Korea SKTelecom 5G LG Uplus 5G
Traveller reviews
Ji-woo N.
Mexico · Jul 2026
Decent speeds, though slower than I expected in a few spots.
Ingrid
GotoeSIM Support
· 3 weeks ago Appreciate you sharing this, Ji-woo. We're constantly optimising speeds and coverage across Japan & South Korea. Reach us anytime at esimtopup.io/support if we can help. – Ingrid, eSIM TopUp Support
Haruto D.
Spain · Jun 2026
Good coverage in the city, a bit patchy in remote areas.
Tom
GotoeSIM Support
· 1 month ago Thank you for taking the time, Haruto. 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. — Tom
Carlos L.
Netherlands · Jun 2026
Worked fine but took a little while to connect at first.
Ken
GotoeSIM Support
· 2 months ago Thank you for taking the time, Carlos. We're constantly optimising speeds and coverage across Japan & South Korea. Any questions, our team is at esimtopup.io/support. — Ken
Ravi V.
Brazil · May 2026
Good coverage in the city, a bit patchy in remote areas. Ran hotspot to my laptop with no issues.
James
GotoeSIM Support
· 2 months ago Appreciate you sharing this, Ravi. Glad it mostly worked for you in Japan & South Korea — we're always improving our coverage. Reach us anytime at esimtopup.io/support if we can help. – James, eSIM TopUp Support
Louis V.
Turkey · May 2026
Good coverage in the city, a bit patchy in remote areas.
Priya
GotoeSIM Support
· 3 months ago Thank you for taking the time, Louis. 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. — Priya
Giulia C.
Australia · Apr 2026
Install took me two tries but was fine after that.
Omar
GotoeSIM Support
· 3 months ago Thanks for the honest feedback, Giulia. 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. – Omar, eSIM TopUp Support
Ingrid R.
India · Apr 2026
Good coverage in the city, a bit patchy in remote areas.
Ken
GotoeSIM Support
· 4 months ago Thank you for taking the time, Ingrid. Glad it mostly worked for you in Japan & South Korea — we're always improving our coverage. Reach us anytime at esimtopup.io/support if we can help. — Ken, eSIM TopUp Support
Giulia V.
Mexico · Apr 2026
Install took me two tries but was fine after that.
Sara
GotoeSIM Support
· 4 months ago Appreciate you sharing this, Giulia. Glad it mostly worked for you in Japan & South Korea — we're always improving our coverage. Reach us anytime at esimtopup.io/support if we can help. – Sara 💜
Katya L.
South Korea · Jan 2026
Solid overall, just wish there was a bit more data for the price. I kept my normal number for calls while using this for data.
David
GotoeSIM Support
· 6 months ago Appreciate you sharing this, Katya. Glad it mostly worked for you in Japan & South Korea — we're always improving our coverage. Reach us anytime at esimtopup.io/support if we can help. — David, eSIM TopUp Support
Aisha H.
United States · Dec 2025
Good coverage in the city, a bit patchy in remote areas.
Ingrid
GotoeSIM Support
· 7 months ago Appreciate you sharing this, Aisha. 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
Kenji P.
Switzerland · Dec 2025
Decent speeds, though slower than I expected in a few spots.
Tom
GotoeSIM Support
· 7 months ago Appreciate you sharing this, Kenji. We're constantly optimising speeds and coverage across Japan & South Korea. Any questions, our team is at esimtopup.io/support. – Tom 💜
Aisha L.
Sweden · Dec 2025
Install took me two tries but was fine after that. Speeds were solid for maps, messaging and browsing.
Sara
GotoeSIM Support
· 7 months ago Thanks for the honest feedback, Aisha. 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. – Sara, eSIM TopUp Support
Haruto R.
France · Dec 2025
Worked fine but took a little while to connect at first.
Laura
GotoeSIM Support
· 7 months ago Thank you for taking the time, Haruto. We're constantly optimising speeds and coverage across Japan & South Korea. Any questions, our team is at esimtopup.io/support. — Laura, eSIM TopUp Support
Fatima V.
Thailand · Oct 2025
Good coverage in the city, a bit patchy in remote areas. Signal held up well on trains and in rural areas.
James
GotoeSIM Support
· 9 months ago Appreciate you sharing this, Fatima. 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. — James
Zoe H.
New Zealand · Oct 2025
Install took me two tries but was fine after that. Data lasted the whole trip with room to spare.
Ingrid
GotoeSIM Support
· 10 months ago Appreciate you sharing this, Zoe. 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
Frequently asked questions
How much does the Japan & South Korea eSIM cost?
The Japan & South Korea 1GB/Day plan costs $2.03 for 1 GB/day over 1 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
Marco K. · 1 week ago
How long does the QR code take to arrive after payment?
Beatriz S. · 1 month ago
Does this work on an iPhone 13?
Budi D. · 3 months ago
Will this keep my WhatsApp active with my home number?
Lucas P. · 4 months ago
Is 5G supported or just 4G?
Grace B. · 6 months ago
Thanks, installed with no problems on my Samsung.
Liam L. · 6 months ago
Does the validity start on purchase or on first use?
Beatriz V. · 8 months ago
Which networks does this connect to?
Haruto G. · 9 months ago
Is roaming charged extra or is it all included?
Ryan N. · 9 months ago
Can I use it in nearby countries too?
Ava B. · 10 months ago
Do I need to install it before I travel or after I arrive?
Camila P. · 11 months ago
Can I top up the same eSIM instead of buying a new one?
Sofia B. · 11 months ago
Can I use this for hotspot/tethering?