Japan & South Korea eSIM — reviews & details
Japan & South Korea 3GB 30Days · 3 GB · 30 days
620 reviews
Coverage & networks
- Japan KDDI/au 5G
- South Korea LG U+ 5G SKTelecom 5G
Traveller reviews
Kenji M.
Spain · Jan 2026
Honestly better than buying a local SIM at the airport. Signal held up well on trains and in rural areas.
Sophie
GotoeSIM Support
· 6 months ago Cheers, Kenji! Wonderful to hear it worked smoothly in Japan & South Korea. — Sophie, GotoeSIM Support
Camila M.
Poland · Jan 2026
No more hunting for a SIM card kiosk on arrival. Customer support answered my question quickly. Will use GotoeSIM for my next trip for sure.
Diego
GotoeSIM Support
· 6 months ago Thanks a lot, Camila! So happy the Japan & South Korea eSIM kept you connected. Come back anytime! — Diego, GotoeSIM Support
Ingrid L.
Philippines · Jan 2026
Decent speeds, though slower than I expected in a few spots. Ran hotspot to my laptop with no issues.
Priya
GotoeSIM Support
· 6 months ago Apologies for the trouble, Ingrid. This isn't the standard we aim for. Please contact us at gotoesim.com/support and we'll sort it out. – Priya 💜
Ryan N.
United States · Jan 2026
Great value compared to roaming charges. Topping up was straightforward when I needed more.
Diego
GotoeSIM Support
· 6 months ago Thanks for sharing, Ryan! So happy the Japan & South Korea eSIM kept you connected. Come back anytime! — Diego
Haruto M.
Poland · Jan 2026
First time using an eSIM and it was painless. Topping up was straightforward when I needed more. Great experience overall.
Mark
GotoeSIM Support
· 6 months ago Thanks a lot, Haruto! So pleased it saved you from roaming bills. — Mark
Isabella W.
Poland · Jan 2026
Worked fine but took a little while to connect at first. Signal held up well on trains and in rural areas.
Ken
GotoeSIM Support
· 6 months ago So sorry to hear this, Isabella. That's not the experience we want for Japan & South Korea. Please contact us at gotoesim.com/support and we'll sort it out. — Ken, GotoeSIM Support
Carlos F.
Malaysia · Jan 2026
Bought it the night before my flight — smooth process. Topping up was straightforward when I needed more.
Diego
GotoeSIM Support
· 6 months ago Cheers, Carlos! Wonderful to hear it worked smoothly in Japan & South Korea. Enjoy your journeys! — Diego
Ingrid K.
Portugal · Jan 2026
Connected the moment I landed. I kept my normal number for calls while using this for data. Great experience overall.
Diego
GotoeSIM Support
· 6 months ago Really appreciate this, Ingrid! Love that you were online the moment you landed in Japan & South Korea. Come back anytime! – Diego 💜
Viktor B.
South Korea · Jan 2026
No more hunting for a SIM card kiosk on arrival. Topping up was straightforward when I needed more.
David
GotoeSIM Support
· 6 months ago So glad to hear this, Viktor! So pleased it saved you from roaming bills. Enjoy your journeys! — David
Grace C.
Sweden · Jan 2026
Great value compared to roaming charges. Topping up was straightforward when I needed more. Five stars from me.
Anna
GotoeSIM Support
· 6 months ago Thanks for sharing, Grace! Love that you were online the moment you landed in Japan & South Korea. Enjoy your journeys! — Anna, GotoeSIM Support
Elena L.
Poland · Jan 2026
Honestly better than buying a local SIM at the airport. Setup instructions in the app were clear and simple.
Anna
GotoeSIM Support
· 6 months ago Thank you so much, Elena! Delighted the speeds worked well for you. We're here whenever you travel again. – Anna 💜
Sven F.
Spain · Jan 2026
Did the job without any drama. Setup instructions in the app were clear and simple.
Tom
GotoeSIM Support
· 6 months ago Thank you for the kind words, Sven! So pleased it saved you from roaming bills. We're here whenever you travel again. — Tom, GotoeSIM Support
Hana W.
India · Jan 2026
Honestly better than buying a local SIM at the airport in Japan & South Korea. Speeds were solid for maps, messaging and browsing.
Diego
GotoeSIM Support
· 6 months ago Thank you so much, Hana! Thrilled it made staying connected effortless. Come back anytime! – Diego 💜
Beatriz W.
Singapore · Jan 2026
Installed in minutes by scanning the QR code. Activation was automatic when I arrived. Zero regrets.
Anna
GotoeSIM Support
· 6 months ago Thank you so much, Beatriz! Delighted the speeds worked well for you. — Anna, GotoeSIM Support
Emma F.
Australia · Jan 2026
No more hunting for a SIM card kiosk on arrival. Customer support answered my question quickly. Zero regrets.
Mark
GotoeSIM Support
· 6 months ago Really appreciate this, Emma! Wonderful to hear it worked smoothly in Japan & South Korea. Safe travels, and see you on your next trip! — Mark, GotoeSIM Support
Frequently asked questions
How much does the Japan & South Korea eSIM cost?
The Japan & South Korea 3GB 30Days plan costs $6.08 for 3 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 GotoeSIM 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
Diego B. · 4 months ago
Do I need to install it before I travel or after I arrive?
Install on Wi-Fi before you fly, Diego — it switches on when you land. — Sophie, GotoeSIM Support
Grace K. · 7 months ago
How long does the QR code take to arrive after payment?
It's immediate, Grace! The QR code is delivered the moment your payment goes through. – Ingrid 💜
Ava H. · 8 months ago
How do I check how much data I have left?
You can check remaining data anytime in the GotoeSIM app under My eSIMs, Ava. — Grace, GotoeSIM Support
Nguyen P. · 8 months ago
Can I use it in nearby countries too?
For nearby countries, Nguyen, a regional plan may suit you better — happy to help you pick. – Omar, GotoeSIM Support
Nguyen D. · 9 months ago
Which networks does this connect to?
It connects to trusted local partner networks, Nguyen, on 4G/5G where available. – Anna, GotoeSIM Support
Anna L. · 9 months ago
Is roaming charged extra or is it all included?
Roaming is included in the plan, Anna — no extra charges, it's all prepaid. — Laura
Noah V. · 10 months ago
Thanks, installed with no problems on my Samsung.
It works great on modern Samsung phones, Noah! Add it via SIM manager and you're set. — Priya
Aisha H. · 10 months ago
Can I top up the same eSIM instead of buying a new one?
Yes Aisha, you can top up the same eSIM anytime — no need to buy a new one. — Emma
Giulia B. · 10 months ago
Will this keep my WhatsApp active with my home number?
Your number stays active for WhatsApp, Giulia! The eSIM just handles data. — Sara
Somchai H. · 11 months ago
Great guide, the setup steps were really helpful.
Thanks Somchai, that means a lot! Reach out anytime. – James, GotoeSIM Support
Lea R. · 1 year ago
Is 5G supported or just 4G?
5G is available where covered, Lea — you'll always get the best speed on offer. — Mark, GotoeSIM Support
Carlos G. · 1 year ago
Does this work on an iPhone 13?
Absolutely, Carlos! Any iPhone XS or newer supports it. Scan the QR in Settings › Cellular. – Ken, GotoeSIM Support