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
Priya T.
India · Aug 2026
Worked fine but took a little while to connect at first. Streaming and video calls worked without buffering.
Mark
GotoeSIM Support
· 1 week ago So sorry to hear this, Priya. That's not the experience we want for Japan & South Korea. Reach our team at esimtopup.io/support so we can help right away. — Mark
Marco W.
Netherlands · May 2026
Good coverage in the city, a bit patchy in remote areas. Setup instructions in the app were clear and simple.
Tom
GotoeSIM Support
· 2 months ago Apologies for the trouble, Marco. That's not the experience we want for Japan & South Korea. Please contact us at esimtopup.io/support and we'll sort it out. — Tom, eSIM TopUp Support
Mohammed P.
Indonesia · Apr 2026
Solid overall, just wish there was a bit more data for the price. Ran hotspot to my laptop with no issues.
Omar
GotoeSIM Support
· 3 months ago Apologies for the trouble, Mohammed. This isn't the standard we aim for. Please contact us at esimtopup.io/support and we'll sort it out. – Omar 💜
Mateo G.
Malaysia · Feb 2026
Decent speeds, though slower than I expected in a few spots. Customer support answered my question quickly.
Omar
GotoeSIM Support
· 6 months ago We're really sorry, Mateo. That's not the experience we want for Japan & South Korea. Please contact us at esimtopup.io/support and we'll sort it out. — Omar
James L.
Italy · Dec 2025
Decent speeds, though slower than I expected in a few spots.
Diego
GotoeSIM Support
· 7 months ago We're really sorry, James. That's not the experience we want for Japan & South Korea. Reach our team at esimtopup.io/support so we can help right away. — Diego, eSIM TopUp Support
Ryan T.
Mexico · Dec 2025
Decent speeds, though slower than I expected in a few spots. Streaming and video calls worked without buffering.
Diego
GotoeSIM Support
· 8 months ago So sorry to hear this, Ryan. This isn't the standard we aim for. Reach our team at esimtopup.io/support so we can help right away. – Diego, eSIM TopUp Support
Lea C.
Brazil · Aug 2025
Worked fine but took a little while to connect at first.
Ken
GotoeSIM Support
· 11 months ago We're really sorry, Lea. We'd love the chance to make this right. Reach our team at esimtopup.io/support so we can help right away. – Ken, eSIM TopUp Support
Min-jun F.
Egypt · Jun 2025
Good coverage in the city, a bit patchy in remote areas. Signal held up well on trains and in rural areas.
Emma
GotoeSIM Support
· 1 year ago We're really sorry, Min-jun. We'd love the chance to make this right. Please contact us at esimtopup.io/support and we'll sort it out. — Emma, eSIM TopUp Support
Carlos P.
UAE · Jun 2025
Install took me two tries but was fine after that.
Priya
GotoeSIM Support
· 1 year ago We're really sorry, Carlos. We'd love the chance to make this right. Reach our team at esimtopup.io/support so we can help right away. – Priya, eSIM TopUp Support
Fatima N.
United States · Apr 2025
Solid overall, just wish there was a bit more data for the price. Customer support answered my question quickly.
Priya
GotoeSIM Support
· 1 year ago Apologies for the trouble, Fatima. That's not the experience we want for Japan & South Korea. Please contact us at esimtopup.io/support and we'll sort it out. – Priya, eSIM TopUp Support
Sri T.
Netherlands · Mar 2025
Install took me two tries but was fine after that.
Emma
GotoeSIM Support
· 1 year ago Apologies for the trouble, Sri. This isn't the standard we aim for. Reach our team at esimtopup.io/support so we can help right away. – Emma 💜
Nguyen G.
Switzerland · Dec 2024
Install took me two tries but was fine after that. Speeds were solid for maps, messaging and browsing.
Yuki
GotoeSIM Support
· 1 year ago Apologies for the trouble, Nguyen. We'd love the chance to make this right. Please contact us at esimtopup.io/support and we'll sort it out. — Yuki, eSIM TopUp Support
Nguyen P.
Spain · Dec 2024
Decent speeds, though slower than I expected in a few spots.
Laura
GotoeSIM Support
· 1 year ago Apologies for the trouble, Nguyen. This isn't the standard we aim for. Reach our team at esimtopup.io/support so we can help right away. — Laura
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?