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
Fatima S.
Turkey · Jan 2025
Honestly better than buying a local SIM at the airport. Signal held up well on trains and in rural areas.
Sophie
eSIM TopUp Support
· 1 year ago Cheers, Fatima! Great to know the setup was quick and easy. – Sophie 💜
Noah L.
New Zealand · Dec 2024
Honestly better than buying a local SIM at the airport. Coverage was strong even outside the city. Telling my friends about this.
Diego
eSIM TopUp Support
· 1 year ago Thank you for the kind words, Noah! Thrilled it made staying connected effortless. — Diego
Lucia S.
Thailand · Dec 2024
Honestly better than buying a local SIM at the airport. Speeds were solid for maps, messaging and browsing.
Priya
eSIM TopUp Support
· 1 year ago Cheers, Lucia! So happy the Japan & South Korea eSIM kept you connected. We're here whenever you travel again. — Priya, eSIM TopUp Support
Liam M.
Turkey · Dec 2024
Saved me a fortune on my holiday. Ran hotspot to my laptop with no issues. Exactly as described — no surprises.
Mark
eSIM TopUp Support
· 1 year ago So glad to hear this, Liam! Great to know the setup was quick and easy. Come back anytime! – Mark, eSIM TopUp Support
Giulia D.
Vietnam · Dec 2024
Super easy to set up before I flew out. Data lasted the whole trip with room to spare.
Anna
eSIM TopUp Support
· 1 year ago So glad to hear this, Giulia! Wonderful to hear it worked smoothly in Japan & South Korea. — Anna
Max B.
Thailand · Dec 2024
Great value compared to roaming charges. Setup instructions in the app were clear and simple. Would definitely buy again.
Yuki
eSIM TopUp Support
· 1 year ago Thank you for the kind words, Max! Delighted the speeds worked well for you. Safe travels, and see you on your next trip! – Yuki, eSIM TopUp Support
Chloe S.
Portugal · Dec 2024
Did the job without any drama. The QR code arrived instantly by email.
Ingrid
eSIM TopUp Support
· 1 year ago Thank you so much, Chloe! Thrilled it made staying connected effortless. — Ingrid
Mohammed N.
Saudi Arabia · Dec 2024
First time using an eSIM and it was painless. Setup instructions in the app were clear and simple. Five stars from me.
Priya
eSIM TopUp Support
· 1 year ago Thank you for the kind words, Mohammed! Delighted the speeds worked well for you. Wishing you many more connected adventures! — Priya
Mateo V.
Thailand · Dec 2024
First time using an eSIM and it was painless in Japan & South Korea. Topping up was straightforward when I needed more.
Ken
eSIM TopUp Support
· 1 year ago Cheers, Mateo! So pleased it saved you from roaming bills. Safe travels, and see you on your next trip! – Ken, eSIM TopUp Support
Sven B.
Switzerland · Dec 2024
Decent speeds, though slower than I expected in a few spots.
Sara
eSIM TopUp Support
· 1 year ago Thank you for taking the time, Sven. 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. — Sara
Emma C.
Brazil · Dec 2024
Great value compared to roaming charges. Setup instructions in the app were clear and simple. Highly recommend for any traveller.
Priya
eSIM TopUp Support
· 1 year ago Really appreciate this, Emma! Great to know the setup was quick and easy. – Priya, eSIM TopUp Support
Mei H.
Thailand · Dec 2024
Super easy to set up before I flew out. Topping up was straightforward when I needed more.
Grace
eSIM TopUp Support
· 1 year ago Thank you for the kind words, Mei! Love that you were online the moment you landed in Japan & South Korea. Wishing you many more connected adventures! — Grace, eSIM TopUp Support
Wei P.
Saudi Arabia · Dec 2024
Honestly better than buying a local SIM at the airport in Japan & South Korea. Topping up was straightforward when I needed more. Telling my friends about this.
Laura
eSIM TopUp Support
· 1 year ago Thank you for the kind words, Wei! Wonderful to hear it worked smoothly in Japan & South Korea. — Laura, eSIM TopUp Support
Giulia D.
Singapore · Dec 2024
Worked fine but took a little while to connect at first.
James
eSIM TopUp Support
· 1 year ago So sorry to hear this, Giulia. That's not the experience we want for Japan & South Korea. Please contact us at esimtopup.io/support and we'll sort it out. — James, eSIM TopUp Support
Mei L.
Spain · Dec 2024
Super easy to set up before I flew out. Activation was automatic when I arrived. A must-have for international travel.
James
eSIM TopUp Support
· 1 year ago Thank you for the kind words, Mei! So pleased it saved you from roaming bills. — James
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. · 7 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?