Skip to content
Connected on arrival

Travel data,
done in 3 minutes

One-touch setup, connected on arrival. 100% refund if it won't install — transparent pricing, no surprises.

Why Roamis is a different kind of travel eSIM

Won't install, murky pricing, refund runarounds — we take on the three biggest travel-eSIM complaints head-on.

Connected on arrival

Connected

Install before you leave; power on at your destination and you're online automatically. Works across many countries.

Transparent pricing

We write the price and terms right on the product page. No hidden fees — that's real transparency.

Won't install? Full refund

A 30-second compatibility check before you buy, and a 100% refund if it won't install. Can't connect on arrival? New code first, refund after.

90-day refund if unused

Haven't started using it? Full refund within 90 days. A change of plans is no problem.

Why travelers choose Roamis

Instead of speed numbers, we focus on what actually matters on a trip.

Connected on arrival

Install before you go; just power on when you land.

Works across many countries

Broad coverage of popular spots — Japan, Vietnam, Thailand, China and more.

Instant delivery

Your QR is sent to the order page the moment you pay.

Full refund if it won't install

If it won't install, you get a 100% refund, anytime.

Where are you headed?

Pick a destination and see the stated starting price right away.

South Korea

from₩2,400~
Browse all destinations
Coverage

Connected across the world's most-loved destinations

One Roamis eSIM, ready the moment you land. New destinations are going live continuously.

  • South Korea
  • + More coming soon
Done in one tap

Three steps, faster than a parcel

Buy → install → use. Set it up before you leave, connect automatically on arrival. No counters, no deposits.

1

Order & pay

Your QR code appears on the order page the moment you pay.

2

Install by QR

Scan the QR on Wi-Fi before you leave to install the eSIM.

3

Land & connect

Power on at your destination and you're online automatically.

New to eSIM?

An eSIM is just a SIM you install by scanning a code

No shop, no plastic card, no swapping. Everything happens on your phone.

1

What is an eSIM?

A digital SIM built into modern phones. Buy online and install in minutes — your physical SIM stays put.

2

No physical card

Nothing to ship or insert. Scan the QR code we email you and the plan is ready.

3

Connect on arrival

Switch on the eSIM when you land and you're online — no roaming counters, no waiting.

Why travelers trust Roamis

Backed by real guarantees, networks, and payments

Every order is protected end to end — from a carrier-grade connection to a refund if things don't work out.

90-day refund

Full refund on any unactivated eSIM.

Secure checkout

SSL-encrypted payments via Toss Payments.

Customer support

Reach our support line at 1555-1850.

Instant delivery

QR code via KakaoTalk right after payment.

Carrier-grade networks

We connect through leading local operators in every destination.

  • SoftBank
  • KDDI
  • China Mobile
  • Chunghwa
  • Singtel
  • AIS
  • Telkomsel
  • Viettel
  • KT
  • SKT
  • AT&T

Payments we accept

Even easier in the app

Manage everything in the Roamis app

Buy, install, and check usage all in one place. Be the first to know when it launches.

* The app is coming soon.

FAQ

Good to know before you buy

Quick answers to the questions travelers ask most.

Most iPhones from XS onward and recent Android flagships support eSIM. Check the compatibility guide and that your phone isn't carrier-locked.
See all FAQs
Ready in 3 minutes

Next trip, no data worries

Japan · Vietnam · Thailand · China… wherever you go, you're online on arrival.

Explore destinations