Japan & South Korea eSIM — reviews & details
Japan & South Korea 5GB 30Days · 5 GB · 30 days
620 reviews
Coverage & networks
- Japan KDDI/au 5G
- South Korea SKTelecom 5G LG Uplus 5G
Traveller reviews
Min-jun B.
Turkey · Aug 2026
Did the job without any drama. Data lasted the whole trip with room to spare. Great experience overall.
Diego
eSIM TopUp Support
· 3 days ago Thanks for sharing, Min-jun! Love that you were online the moment you landed in Japan & South Korea. – Diego, eSIM TopUp Support
Haruto F.
Italy · Aug 2026
Installed in minutes by scanning the QR code. Data lasted the whole trip with room to spare.
Yuki
eSIM TopUp Support
· 3 days ago Cheers, Haruto! Love that you were online the moment you landed in Japan & South Korea. Enjoy your journeys! — Yuki, eSIM TopUp Support
Hana T.
Mexico · Aug 2026
First time using an eSIM and it was painless. Speeds were solid for maps, messaging and browsing. A must-have for international travel.
Tom
eSIM TopUp Support
· 6 days ago Thank you for the kind words, Hana! Love that you were online the moment you landed in Japan & South Korea. We're here whenever you travel again. — Tom
Wei R.
Canada · Aug 2026
Great value compared to roaming charges. Setup instructions in the app were clear and simple. Would definitely buy again.
Laura
eSIM TopUp Support
· 6 days ago Thank you for the kind words, Wei! Wonderful to hear it worked smoothly in Japan & South Korea. Come back anytime! — Laura, eSIM TopUp Support
Katya T.
New Zealand · Aug 2026
Worked fine but took a little while to connect at first. Customer support answered my question quickly.
Sophie
eSIM TopUp Support
· 1 week ago Appreciate you sharing this, Katya. We're constantly optimising speeds and coverage across Japan & South Korea. Any questions, our team is at esimtopup.io/support. — Sophie
Marco H.
Australia · Aug 2026
No more hunting for a SIM card kiosk on arrival. Streaming and video calls worked without buffering. Made staying connected effortless.
Diego
eSIM TopUp Support
· 1 week ago Really appreciate this, Marco! Wonderful to hear it worked smoothly in Japan & South Korea. — Diego, eSIM TopUp Support
Yuki D.
Japan · Aug 2026
Great value compared to roaming charges. Coverage was strong even outside the city. Made staying connected effortless.
Omar
eSIM TopUp Support
· 1 week ago Really appreciate this, Yuki! Thrilled it made staying connected effortless. – Omar, eSIM TopUp Support
Mohammed C.
Australia · Aug 2026
Exactly what I needed for travelling. Activation was automatic when I arrived.
James
eSIM TopUp Support
· 1 week ago Thank you for the kind words, Mohammed! Thrilled it made staying connected effortless. Wishing you many more connected adventures! — James
Wei H.
Ireland · Aug 2026
Did the job without any drama. Data lasted the whole trip with room to spare. Five stars from me.
Yuki
eSIM TopUp Support
· 1 week ago Cheers, Wei! Love that you were online the moment you landed in Japan & South Korea. We're here whenever you travel again. – Yuki, eSIM TopUp Support
Mei W.
United States · Aug 2026
Install took me two tries but was fine after that. Topping up was straightforward when I needed more.
Laura
eSIM TopUp Support
· 1 week ago So sorry to hear this, Mei. This isn't the standard we aim for. Please contact us at esimtopup.io/support and we'll sort it out. — Laura
Katya W.
Australia · Jul 2026
Bought it the night before my flight — smooth process in Japan & South Korea. Coverage was strong even outside the city. A must-have for international travel.
Ken
eSIM TopUp Support
· 1 week ago Cheers, Katya! Delighted the speeds worked well for you. Safe travels, and see you on your next trip! — Ken, eSIM TopUp Support
Andre R.
United Kingdom · Jul 2026
Bought it the night before my flight — smooth process. Topping up was straightforward when I needed more. Great experience overall.
Anna
eSIM TopUp Support
· 1 week ago So glad to hear this, Andre! Wonderful to hear it worked smoothly in Japan & South Korea. Wishing you many more connected adventures! — Anna, eSIM TopUp Support
Haruto F.
Saudi Arabia · Jul 2026
Did the job without any drama. Data lasted the whole trip with room to spare. Zero regrets.
Tom
eSIM TopUp Support
· 2 weeks ago Thank you so much, Haruto! Thrilled it made staying connected effortless. We're here whenever you travel again. – Tom 💜
Beatriz C.
Spain · Jul 2026
Super easy to set up before I flew out. Setup instructions in the app were clear and simple. Will use eSIM TopUp for my next trip for sure.
Laura
eSIM TopUp Support
· 2 weeks ago Really appreciate this, Beatriz! So happy the Japan & South Korea eSIM kept you connected. – Laura 💜
Hana R.
Japan · Jul 2026
Super easy to set up before I flew out in Japan & South Korea. Speeds were solid for maps, messaging and browsing. Highly recommend for any traveller.
Tom
eSIM TopUp Support
· 2 weeks ago Really appreciate this, Hana! Delighted the speeds worked well for you. – Tom, eSIM TopUp Support
Frequently asked questions
How much does the Japan & South Korea eSIM cost?
The Japan & South Korea 5GB 30Days plan costs $9.75 for 5 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
Emma M. · 2 months ago
Can I use this for hotspot/tethering?
Andre H. · 2 months ago
Is 5G supported or just 4G?
Elena H. · 3 months ago
Thanks, installed with no problems on my Samsung.
Arjun N. · 4 months ago
How do I check how much data I have left?
Lucia L. · 4 months ago
Will this keep my WhatsApp active with my home number?
Mohammed P. · 6 months ago
Which networks does this connect to?
Katya C. · 6 months ago
Can I use it in nearby countries too?
Liam G. · 7 months ago
Can I top up the same eSIM instead of buying a new one?
Emma C. · 7 months ago
Great guide, the setup steps were really helpful.
Katya K. · 9 months ago
How long does the QR code take to arrive after payment?
Lea N. · 1 year ago
Does the validity start on purchase or on first use?
Marco N. · 1 year ago
Do I need to install it before I travel or after I arrive?