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
Giulia G.
United Kingdom · Jun 2026
Good coverage in the city, a bit patchy in remote areas.
Ingrid
GotoeSIM Support
· 2 months ago Apologies for the trouble, Giulia. That's not the experience we want for Japan & South Korea. Reach our team at esimtopup.io/support so we can help right away. — Ingrid, eSIM TopUp Support
Yuki S.
France · Apr 2026
Decent speeds, though slower than I expected in a few spots.
Grace
GotoeSIM Support
· 4 months ago We're really sorry, Yuki. That's not the experience we want for Japan & South Korea. Please contact us at esimtopup.io/support and we'll sort it out. – Grace, eSIM TopUp Support
Emma D.
Egypt · Feb 2026
Worked fine but took a little while to connect at first. Topping up was straightforward when I needed more.
David
GotoeSIM Support
· 6 months ago We're really sorry, Emma. That's not the experience we want for Japan & South Korea. Reach our team at esimtopup.io/support so we can help right away. — David, eSIM TopUp Support
Wei L.
Egypt · Jan 2026
Good coverage in the city, a bit patchy in remote areas.
Tom
GotoeSIM Support
· 6 months ago We're really sorry, Wei. We'd love the chance to make this right. Please contact us at esimtopup.io/support and we'll sort it out. – Tom 💜
Sophia K.
South Korea · Dec 2025
Decent speeds, though slower than I expected in a few spots. Setup instructions in the app were clear and simple.
Diego
GotoeSIM Support
· 7 months ago Apologies for the trouble, Sophia. We'd love the chance to make this right. Please contact us at esimtopup.io/support and we'll sort it out. — Diego
Mohammed C.
South Korea · Oct 2025
Worked fine but took a little while to connect at first. Activation was automatic when I arrived.
Priya
GotoeSIM Support
· 10 months ago So sorry to hear this, Mohammed. We'd love the chance to make this right. Please contact us at esimtopup.io/support and we'll sort it out. – Priya 💜
Lea V.
Spain · Aug 2025
Worked fine but took a little while to connect at first. Streaming and video calls worked without buffering.
Anna
GotoeSIM Support
· 1 year ago Apologies for the trouble, Lea. We'd love the chance to make this right. Reach our team at esimtopup.io/support so we can help right away. — Anna, eSIM TopUp Support
Andre S.
Canada · May 2025
Solid overall, just wish there was a bit more data for the price. Coverage was strong even outside the city.
Grace
GotoeSIM Support
· 1 year ago Apologies for the trouble, Andre. This isn't the standard we aim for. Reach our team at esimtopup.io/support so we can help right away. — Grace
Marco N.
Mexico · Feb 2025
Worked fine but took a little while to connect at first.
Priya
GotoeSIM Support
· 1 year ago We're really sorry, Marco. We'd love the chance to make this right. Reach our team at esimtopup.io/support so we can help right away. – Priya 💜
Lea V.
Netherlands · Dec 2024
Decent speeds, though slower than I expected in a few spots. Speeds were solid for maps, messaging and browsing.
Ingrid
GotoeSIM Support
· 1 year ago So sorry to hear this, Lea. This isn't the standard we aim for. Please contact us at esimtopup.io/support and we'll sort it out. – Ingrid 💜
Omar W.
India · Dec 2024
Worked fine but took a little while to connect at first.
David
GotoeSIM Support
· 1 year ago So sorry to hear this, Omar. That's not the experience we want for Japan & South Korea. Reach our team at esimtopup.io/support so we can help right away. – David 💜
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?