Japan & South Korea eSIM
Mobile data in Japan & South Korea. No roaming fees, instant activation, one-tap install on iPhone, Samsung and Android.
- 01Internet on arrival
- 02No SIM swap — keep your number
- 03Set up in under a minute, before you fly
Choose your plan
- 3G/4G/5G network speeds
- Top-up anytime if needed
- Instant Activation · Hotspot Sharing
- 24/7 Support · No Contracts
- 1 GB high speed per 24 hours
- Unlimited data (min. 512 Kbps after high-speed)
- 3G/4G/5G · Instant activation · Hotspot sharing
- 24/7 Support · No Contracts
All Japan & South Korea eSIM plans and prices
| Data | Valid | Price | Per GB |
|---|---|---|---|
| 1 GB | 7 Days | $2.49 | $2.49 |
| 3 GB | 15 Days | $4.99 | $1.66 |
| 3 GB | 30 Days | $5.99 | $2.00 |
| 5 GB | 30 Days | $8.99 | $1.80 |
| 10 GB | 30 Days | $16.99 | $1.70 |
| 20 GB | 30 Days | $28.99 | $1.45 |
| 1 GB a day | Unlimited daily | $2.49 / day | — |
| 2 GB a day | Unlimited daily | $4.49 / day | — |
| 3 GB a day | Unlimited daily | $5.99 / day | — |
| 5 GB a day | Unlimited daily | $7.49 / day | — |
| 10 GB a day | Unlimited daily | $12.99 / day | — |
Which Japan & South Korea eSIM plan should I pick?
A typical day: 2 hours of maps, a few calls, a short video call, photos on WhatsApp and 30 minutes of Reels or TikTok — about 1 GB a day.
-
Weekend or 3 days
about 3 GB 3 GB · 15 Days
$4.99 -
7 days
about 7 GB 10 GB · 30 Days
$16.99 -
14 days
about 14 GB 20 GB · 30 Days
$28.99 -
30 days
about 30 GB 20 GB · 30 Days
$28.99 -
Streaming and hotspot every day
Unlimited daily
from $2.49 / day
More scrolling, streaming or hotspot? Go one size up, or pick a daily plan.
How it works
- Step01 Choose Plan Pick the data and validity that fit your trip.
- Step02 Receive Order Email Your eSIM arrives by email straight away.
- Step03 Install in one tap Tap install, then switch on data when you land.
Coverage
-
Japan
KDDI/au 5G, SoftBank 5G
-
South Korea
SKTelecom 5G, LG Uplus 5G
Need more coverage?
Common Questions
How does an eSIM help with sightseeing in Japan & South Korea?
At Haneda Airport, you walk past the SIM counter queue and open Google Maps for the train into Tokyo. Your eSIM gives you data without that extra stop. On the ride, you trace the route to Asakusa and save the address of a ramen shop. Outside the station, Google Translate helps you read the menu, and you send a photo of your bowl home through WhatsApp.
Your Japan & South Korea route continues in Seoul, where you open NAVER Map to find your way through Jongno to a courtyard cafe. You book a palace tour, then use KakaoTalk to message a friend about where to meet. Back in Tokyo for your final stop, you use Uber to arrange a ride and Uber Eats to order dinner to your accommodation, following the delivery progress while you sort your photos.
What should tourists look for in a Japan & South Korea eSIM?
For Japan & South Korea, look for a regional eSIM that covers both countries and the routes between your sightseeing stops. This plan covers both, with its strongest reach in cities and main tourist areas. Hotspot works on most plans, and you can top up with more data when needed.
Choose an option you can prepare before flying. This eSIM installs in one tap from the button in your order email, with 180 days from purchase to activate. It is data-only, and the data allowance and validity depend on the package you choose.
Where does the Japan & South Korea eSIM have coverage?
Your Japan & South Korea eSIM connects to local networks including KDDI/au, SoftBank, SKTelecom, LG Uplus, with 3G/4G/5G coverage. Coverage is strongest in cities and main tourist areas, including Tokyo, Kyoto and Osaka in Japan, and Seoul and Busan in South Korea. It becomes patchier in Japan’s mountain interior and remote outer islands, and across mountainous parts of South Korea such as Seoraksan National Park.
| SimSwift eSIM | Local SIM | Roaming | |
|---|---|---|---|
| Setup | Install at home before you fly | Find a shop or airport kiosk and queue after landing | Nothing to install; switch roaming on |
| When you're connected | On landing, when connected to a supported network | After purchase and setup | On landing if your home plan includes roaming there |
| Paperwork / ID | No paperwork or ID needed | ID may be asked for at the counter | No additional paperwork beyond your existing home account |
| Cost predictability | Pay once upfront for your chosen package | Buy on arrival at local rates | Depends on your home plan and included roaming |
| WhatsApp & your number | Keep using WhatsApp on your home number | New local number; WhatsApp stays on your home number | Your home number, on your home plan's roaming terms |
| Top-ups | Add data anytime with a top-up | Use the provider’s app or return to a shop | Extra data depends on your home plan |
What digital travel tips help in Japan & South Korea?
- Save accommodation addresses in Japanese and Korean, plus screenshots of booking confirmations, so you can show them without loading a page.
- Download offline walking maps for Japan; save route screenshots for South Korea, where offline navigation options are more limited.
- Bring an adapter for Japan’s Type A sockets and South Korea’s Type C or F sockets; check your charger supports both voltages.
- Carry a physical payment card and cash in Japan & South Korea; small restaurants and market stalls do not all accept mobile wallets.
- Set your phone to silent on trains in Japan and South Korea, and use headphones for navigation audio.
- Keep a power bank insulated during winter sightseeing in Seoul; cold weather drains phone batteries faster.
How much does a Japan & South Korea eSIM cost?
SimSwift Japan & South Korea eSIMs start at $2.49 for 1 GB valid for 7 Days. Unlimited daily plans start at $2.49 a day.