Carriers, 5G coverage and payments in South Korea
South Korea routes via SK Telecom or KT — both with the world's most advanced 5G (mmWave + sub-6 GHz). Seoul, Busan, Incheon, Daegu, and Daejeon have full 5G NR with consistently sub-50ms latency.
Subway and KTX high-speed trains have full 5G underground and at speed. Most modern phones work without configuration; older locked Korean carrier phones need unlock first.
Card, Apple Pay, Google Pay, plus crypto (USDT, BTC). Korean Won handled via Stripe FX.
For business and tech-trip travel: hotspot enabled (COEX, KINTEX, Samsung HQ visits). VAT-compliant invoices on request. Top up the same eSIM if extending the trip.
eSIM details
South Korea eSIM — Travel & business data plans
Instant eSIM for South Korea. Choose 1GB to 100GB. Activate in 3 minutes.
Choose your plan
Honest unlimited: X GB/day at full 5G/LTE speed, then continues at the 384 Kbps throttle until midnight UTC. Resets daily. Standard industry FUP — disclosed openly on the product card, not buried in fine print.
When does South Korea eSIM make sense?
Three scenarios cover almost every South Korea eSIM purchase. Match yours to pick the right plan.
- Short trip (3-7 days), light data. Maps, WhatsApp, occasional photos. A 1 GB / 7 days plan at $3.90 covers it. Skip Daily Unlimited — overkill.
- Active trip (1-2 weeks), regular streaming + tethering. Daily Unlimited 1 GB/day × 7 days at $6.90 removes the GB anxiety — after the daily cap you slow to throttle but don't run out.
- Long stay (2-4 weeks), remote work / business. Daily Unlimited 1 GB/day × 30 days at $18.90 beats per-GB pricing once you cross ~20 GB total. Hotspot enabled for laptop tethering.
How it works
Pick your plan and pay (Apple Pay, Google Pay, card, crypto, or your $5 welcome credit).
Receive a QR code by email within 60 seconds.
In Settings → Cellular → Add eSIM, scan the QR.
Land in South Korea, switch on Data Roaming, you're online.
Frequently asked questions
Still stuck? Email support — we reply in under 10 minutes (in EN or RU).
Does the South Korea eSIM work on iPhone and Android?+
Yes. Works on iPhone XS or later, Pixel 3 or later, Galaxy S20 or later, and most modern unlocked Androids. No physical SIM slot needed. Your phone connects to SKTelecom or LG U+ once the eSIM activates in South Korea.
How fast will I receive my eSIM after purchase?+
Within 60 seconds. The QR code is emailed automatically after Stripe confirms payment. You can install it immediately and activate when you land in South Korea — first connection to SKTelecom or LG U+ triggers activation.
Does this eSIM include voice calls and SMS?+
No. All plans are data-only — there are no voice minutes or SMS included. Use WhatsApp, Telegram, FaceTime, or other VoIP apps over the data connection.
Can I keep my home SIM active while using this?+
Yes. The eSIM installs as a secondary line. Your primary SIM stays active so you can still receive calls and SMS on your home number while using South Korea eSIM for data.
What speed will I get in South Korea?+
5G where available, 4G LTE elsewhere. We route via SKTelecom or LG U+, which gives you the same coverage as a local resident's SIM. Remote areas and rural zones may fall back to LTE — normal for the geography, not an eSIM limit.
What happens when my data runs out?+
You can top up the same eSIM from your Simsimsim dashboard with another South Korea plan, or buy a plan for a different country if you're moving on. The eSIM profile stays installed.
Is hotspot / tethering supported?+
Yes. All our South Korea plans allow hotspot sharing to other devices (laptop, tablet, etc.) with no extra fees or speed throttle. Hotspot routes through SKTelecom or LG U+ just like the phone itself.
What's the refund policy?+
Three tiers. (1) Never installed — 180 days full cash refund. If you never scanned the QR (trip cancelled, plans changed), money back to your card. (2) Installed but never activated — 30 days full cash refund after we verify zero usage. (3) Activated within 30 days — 100% Simsimsim credit (valid 12 months on any plan), cash refund unavailable after activation. Tech failure verified at any time: full refund plus $5 credit, no questions. See the full /refund page for details.
Can I expense this for business travel? VAT invoice?+
Yes — every order generates a receipt with line items suitable for expense reports. VAT-compliant invoices with your company VAT number are available on request inside the dashboard. See our business travel guide for invoicing, hotspot, and multi-device details.
Will hotspot tethering work for my laptop or tablet?+
Yes. Hotspot/tethering is enabled on every South Korea plan with no per-device limit — connect a laptop, iPad, smart watch, or up to 10 devices simultaneously. Useful for remote workers and digital nomads who need a backup connection at unreliable hotel Wi-Fi.