eSIM Data Plans for Japan & South Korea — One eSIM

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eSIM data plans for Japan & South Korea

One eSIM for Tokyo, Seoul, and everywhere in between


2 countries

1GB

High Speed

7 days

Plan duration

$4.51 USD

$4.51 per GB
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Instant digital delivery

2 countries

3GB

High Speed

30 days

Plan duration

$9.08 USD

$3.03 per GB
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Instant digital delivery

2 countries

5GB

High Speed

30 days

Plan duration

$12.64 USD

$2.53 per GB
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Instant digital delivery

2 countries

20GB

High Speed

30 days

Plan duration

$35.09 USD

$1.75 per GB
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Instant digital delivery

Covered countries (2): Japan, South Korea.

Prefer a single-country plan?

Shop an eSIM for just one destination — tap a country to see its plans.

Why one eSIM for Japan & South Korea?

Tokyo and Seoul are only about a 2.5-hour flight apart, which makes them one of the most popular pairings in East Asia. Plenty of travelers do both in a single trip — chasing cherry blossoms in spring, working through Tokyo's ramen and Seoul's street food, hopping between Shibuya shopping and Myeongdong markets, or mixing Japanese pop culture with the K-culture scene. It's a natural two-stop itinerary, and your phone needs to keep up in both places.

Instead of buying a separate SIM in each country or paying per-day roaming, one eSIM-Now plan covers Japan and South Korea together. Install it before you leave home, land in either country, and you're online right away — no counter queues, no swapping physical SIMs at the airport, and no bill shock when you cross to the next stop.

How much data do you need?

  • Light use (messaging, maps, email): 1-3GB for a 1-2 week trip
  • Moderate use (social media, photos, light browsing): 5GB for a 1-2 week trip
  • Heavy use (video calls, streaming, remote work): 10GB+ for a 1-2 week trip

Navigation between train stations and translation apps are the two things you'll lean on most, so lean toward the higher end if you plan to be out exploring all day.

eSIM vs roaming

eSIM-Now Phone Carrier Roaming
Cost One upfront price per plan $5-15/day or per-MB charges
Activation Instant (scan a QR code) Call your carrier before the trip
Coverage Japan and South Korea on one plan Varies by carrier agreements
Data control Choose your exact plan size Often throttled after limits
Contract No contract, pay once Tied to your phone plan

How eSIM Now Works

1

Choose Destination & Plan

Choose Destination & Plan

2

Install eSIM

Install eSIM

3

Activate eSIM

Activate eSIM

4

Monitor

Monitor

Frequently Asked Questions

  • How do I activate my eSIM after purchasing?

    After completing your purchase, you’ll receive an email with your eSIM details and a step-by-step activation guide. Most users can activate their eSIM in less than 5 minutes.

  • Will this eSIM work with my phone?

    Our eSIMs are compatible with most modern devices that support eSIM technology. To check compatibility, ensure your phone is unlocked and supports eSIM. If you’re unsure, contact us before purchasing.

  • What happens if I run out of data?

    You’ll receive notifications as you approach your data limit. If you run out of data, you can easily purchase additional plans directly from our website.

  • Can I keep using my primary SIM while using the eSIM?

    Yes, you can use your primary SIM for calls and texts while using the eSIM for data. Just make sure to disable data roaming on your primary SIM to avoid unexpected charges.

  • Is there any additional cost or hidden fees?

    No, what you see at checkout is what you pay. There are no hidden fees or additional costs after purchase.

  • What networks will this eSIM connect to?

    This eSIM connects to top-tier networks like T-Mobile and Verizon in the United States, ensuring fast and reliable coverage throughout your trip.

  • How long is the eSIM valid for?

    Once you activate the eSIM, you can use it as the duration in the plan stats. If you don’t activate it immediately, you have up to 180 days to use it after purchase.

  • Can I get a refund if the eSIM doesn’t work or I change my mind?

    Refunds are available as long as the eSIM has not been used or activated. If you experience any issues, our support team will assist you to ensure a smooth resolution or refund if eligible.

  • What if I face issues during activation or usage?

    We provide 24/7 customer support to help you with any issues, whether it’s activation or connectivity. Just reach out to us via email ([email protected]) or live chat.

  • How secure is the checkout process?

    We use industry-standard SSL encryption to ensure your payment information is 100% secure. We also accept trusted payment methods like Visa, Mastercard, and PayPal.