Japan & South Korea 1GB/Day eSIM Reviews & Details — 4.4★

Coverage & networks

Japan KDDI/au 5G
South Korea SKTelecom 5G LG Uplus 5G

Traveller reviews

All 5★ 4★ 3★ 2★ 1★

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Haruto L.

Thailand · Jun 2026

✓ Verified

Decent speeds, though slower than I expected in a few spots.

Grace GotoeSIM Support · 2 months ago

So sorry to hear this, Haruto. That's not the experience we want for Japan & South Korea. Reach our team at gotoesim.com/support so we can help right away. — Grace

E

Elena F.

South Korea · Jun 2026

✓ Verified

Good coverage in the city, a bit patchy in remote areas.

Ken GotoeSIM Support · 2 months ago

So sorry to hear this, Elena. We'd love the chance to make this right. Reach our team at gotoesim.com/support so we can help right away. — Ken, GotoeSIM Support

Frequently asked questions

How much does the Japan & South Korea eSIM cost?

The Japan & South Korea 1GB/Day plan costs $2.16 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 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

N

Nadia H. · 3 months ago

Can I use it in nearby countries too?

Yuki GotoeSIM Support

This plan covers its listed destination, Nadia — for multiple countries, check our regional plans. — Yuki

A

Aisha D. · 4 months ago

Do I need to install it before I travel or after I arrive?

Emma GotoeSIM Support

Install on Wi-Fi before you fly, Aisha — it switches on when you land. – Emma, GotoeSIM Support

S

Sven R. · 6 months ago

Can I use this for hotspot/tethering?

Sophie GotoeSIM Support

Yes Sven, hotspot/tethering works fine — share your data to a laptop or tablet anytime. — Sophie, GotoeSIM Support

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Olivia L. · 7 months ago

How do I check how much data I have left?

Diego GotoeSIM Support

Your usage is tracked live in the app, Olivia — check My eSIMs anytime. – Diego, GotoeSIM Support

R

Ryan B. · 7 months ago

Great guide, the setup steps were really helpful.

Ken GotoeSIM Support

Thanks Ryan, that means a lot! Reach out anytime. — Ken

O

Olivia B. · 8 months ago

Is roaming charged extra or is it all included?

Anna GotoeSIM Support

No surprise fees, Olivia! Roaming is part of the plan and never billed separately. — Anna

K

Katya N. · 9 months ago

Which networks does this connect to?

Laura GotoeSIM Support

You'll be on top local networks, Katya — full details are on the plan page under Coverage. – Laura 💜

A

Ava B. · 9 months ago

Thanks, installed with no problems on my Samsung.

Ingrid GotoeSIM Support

It works great on modern Samsung phones, Ava! Add it via SIM manager and you're set. — Ingrid, GotoeSIM Support

F

Fatima R. · 10 months ago

Can I top up the same eSIM instead of buying a new one?

David GotoeSIM Support

Yes Fatima, you can top up the same eSIM anytime — no need to buy a new one. — David, GotoeSIM Support

J

James T. · 1 year ago

How long does the QR code take to arrive after payment?

James GotoeSIM Support

It's immediate, James! The QR code is delivered the moment your payment goes through. — James, GotoeSIM Support

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Kenji N. · 1 year ago

Does the validity start on purchase or on first use?

Omar GotoeSIM Support

The clock starts on first use in-country, Kenji, so buying early is totally fine. – Omar, GotoeSIM Support

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Lucas G. · 1 year ago

Does this work on an iPhone 13?