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Documentation

Learn it once. Connect everywhere.

Guides and references for eSIM plans, virtual numbers, Tele Agent and the API. Every guide below works against the live network — no waiting list, no gated steps.

Start here

Quickstarts

Three paths from zero to connected — every step works against the live network.

Buy your first eSIM

  1. Create your account — pick a plan, live now.
  2. Pick a plan and check out — live now.
  3. Scan the QR code to install the eSIM.

Set up a team plan

  1. Create your account — pick a plan, live now.
  2. Create your workspace and invite the team.
  3. Assign numbers and data pools per line.

Build on the developer API

  1. Mint a developer API key (self-serve) — live now.
  2. Read the OpenAPI 3.1 document — live now.
  3. Subscribe to com.esimgomobile.* webhooks for billing, porting, number and call events — live now.
  4. Automate top-ups per line.
Shortcuts

Popular right now

Check device compatibility→ Installation guide→ Coverage by country→ API & developers→ System status→ Pricing→ eSIM plans→ Virtual numbers→ Tele Agent→
Platform

The platform, in five parts

Coverage

195 country guides with install steps and local network notes.

Read →

Plans

Data plus a permanent phone number on one eSIM line.

Read →

Numbers

Real virtual numbers for calls, SMS and verification codes.

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Tele Agent

An AI receptionist that answers, books and summarizes calls.

Read →

API

Catalog, checkout, account, QR, balance, numbers and Tele Agent endpoints.

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For builders

Developer platform — live today

Self-serve API keys, a published OpenAPI 3.1 document, JavaScript and Python SDKs, a CLI, com.esimgomobile.* webhooks, a number-porting API, KYC intake and an honest status page. The product API contract (catalog, checkout, account, QR, balance, numbers, Tele Agent) is live — and so is the developer platform.

Build on the API System status

History

What shipped

Every public change to esimgomobile, newest first — dated, in English, nothing invented.

Read the changelog

Keep exploring

More resources

Blog→ Tools hub→ Pricing→ Status→ Support→

esimgomobile in South Korea

Using docs in South Korea? You are on the local edition — key facts for South Korea (capital Seoul, dial code +82) are below. esimgomobile plans for South Korea are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalSeoul
Dial code+82
CurrencySouth Korean won (KRW)
Time zoneUTC+9
Main languagesKorean

Plans are live — see plans and pricing.

Up close

esimgomobile in action.

Twenty product screens and twenty field photos — this is what traveling connected looks like.

vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · South Korea
The honest comparison on Docs · South Korea: one prepaid eSIM price versus carrier roaming.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Checkout
Atlas 5GB — South Koreatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Docs · South Korea: Atlas 5GB, full price up front, no fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
South Korea · 5G
Signal widget on Docs · South Korea: network generation and place, always visible.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Tele Agent
“Setting up your South Korea line…”
AI voice agent on Docs · South Korea — answers spoken aloud, never a support ticket.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
esimgomobile.com
Plans for South Korea
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Docs · South Korea: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Docs · South Korea — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
Support
How does Docs · South Korea work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Docs · South Korea: what it does, in one honest answer.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Recent speeds
Cairo657 Mbps
Paris311 Mbps
New York902 Mbps
Recent speeds for Docs · South Korea — Cairo, Paris, New York: illustrative 5G figures, not live measurements.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
Bas Linders
South Korea is calling.
Get your eSIM
“South Korea is calling.” — the banner on Docs · South Korea: two minutes from curious to connected.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
My eSIM
81%50 GB left
Days left22
Top up+10 GB
Data dashboard on Docs · South Korea: 81% remaining, days left, top-up one tap away.
  1. 1Live usage ring: see remaining data at a glance, no mental math.
  2. 2Top-up button sits right where you need it when data runs low.
people brainstorming at the office
“Landed in South Korea and was online before the seatbelt sign went off.”
Leo M.Verified traveler · South Korea
Traveler review for Docs · South Korea: “Landed in South Korea and was online before the seatbelt sign went off.” — Leo M..
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
31
free tools
launch fact
Launch fact behind Docs · South Korea: 31 free tools — a fixed figure, not live telemetry.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
eSIM installedYour South Korea plan is ready.
Push · just now
Push notification on Docs · South Korea: eSIM installed, plan ready to activate.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Why travelers pick it
  • Hotspot included
  • Keep WhatsApp number
  • One-tap top-up
Why travelers pick Docs · South Korea: Hotspot included, Keep WhatsApp number, One-tap top-up.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Network
5G
South Korea connected
Network widget for Docs · South Korea: 5G, full bars — zero ambiguity about the connection.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
Speed test
542Mbps
5G · South Korea · 18 ms
Illustrative speed readout on Docs · South Korea: 542 Mbps, 18 ms — example figures, not live measurements.
  1. 1Live usage ring: see remaining data at a glance, no mental math.
  2. 2Top-up button sits right where you need it when data runs low.
Virtual number
+1 205 503 2239
Routes toSouth Korea
SMS + voiceEnabled
Your second line on Docs · South Korea: +1 205 503 2239 — real number, SMS and voice enabled.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Dashboard
Active eSIMs4
Data left50 GB
Current citySouth Korea
Web dashboard on Docs · South Korea: every eSIM, every trip, 50 GB left — one screen.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Language
DeutschPortuguêsEspañol
Language picker on Docs · South Korea — Deutsch, Português, Español: the app speaks six languages.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Atlas Unlimited
Unlimited · 30 days
South Korea
Atlas Unlimited — Unlimited · 30 days, prepaid and ready on Docs · South Korea.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
silver iphone on black surface — Docs · South Korea: Border crossings without the paperwork shuffle: ID photos stored on the phone.
Docs · South Korea: Border crossings without the paperwork shuffle: ID photos stored on the phone.
close up shot of smartphone screen — Docs · South Korea: Each doc ends with 'still stuck?' — pointing at the Tele Agent.
Docs · South Korea: Each doc ends with 'still stuck?' — pointing at the Tele Agent.
airplane wing above the clouds — Docs · South Korea: Island time, online time: ferries, beaches and full signal.
Docs · South Korea: Island time, online time: ferries, beaches and full signal.
oia village on santorini island — Docs · South Korea: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Docs · South Korea: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
eiffel tower seen from alley in paris france — Docs · South Korea: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Docs · South Korea: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
manhattan cityscape with skyscrapers — Docs · South Korea: Every guide shows the happy path and the three ways it breaks.
Docs · South Korea: Every guide shows the happy path and the three ways it breaks.
group of friends enjoying a beach day — Docs · South Korea: Changelog-linked: every doc knows which release changed it.
Docs · South Korea: Changelog-linked: every doc knows which release changed it.
one wtc in nyc — Docs · South Korea: The viewpoint at golden hour: livestream the sunset to everyone back home.
Docs · South Korea: The viewpoint at golden hour: livestream the sunset to everyone back home.
Dr.Ramsinh Jadav — Docs · South Korea: The group chat stays live across every border you cross.
Docs · South Korea: The group chat stays live across every border you cross.
business partners having a meeting at the office — Docs · South Korea: Street level: navigation, rideshares and reviews, all instant.
Docs · South Korea: Street level: navigation, rideshares and reviews, all instant.
the view of the ocean from the top of a hill — Docs · South Korea: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Docs · South Korea: Rooftop check-in: boarding passes and hotel keys, all on the phone.
person video calling using a laptop — Docs · South Korea: The last night: photo album backed up, memories safe before wheels-up.
Docs · South Korea: The last night: photo album backed up, memories safe before wheels-up.
aerial view from airplane over barren landscape — Docs · South Korea: Duty-free browsing: price-checked against home before buying.
Docs · South Korea: Duty-free browsing: price-checked against home before buying.
a greek flag is flying over the ocean — Docs · South Korea: The modern arrival: online before the seatbelt sign goes off.
Docs · South Korea: The modern arrival: online before the seatbelt sign goes off.
woman using laptop at cafe — Docs · South Korea: The docs assume you're at an airport — short, scannable, correct.
Docs · South Korea: The docs assume you're at an airport — short, scannable, correct.
eiffel tower against grey sky — Docs · South Korea: Downtown, connected: the eSIM finds the fastest local network on its own.
Docs · South Korea: Downtown, connected: the eSIM finds the fastest local network on its own.
vibrant nightlife in tokyo s busy streets — Docs · South Korea: Harbor views with full bars: coverage where travelers actually go.
Docs · South Korea: Harbor views with full bars: coverage where travelers actually go.
women at the beach — Docs · South Korea: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Docs · South Korea: Coworking abroad: laptop tethered, calls crisp, deadlines met.
aerial view of fira santorini s white structures — Docs · South Korea: Museum afternoons with audio guides streaming, not buffering.
Docs · South Korea: Museum afternoons with audio guides streaming, not buffering.
iconic blue dome church overlooking santorini coastline — Docs · South Korea: Currency exchange, skipped: the phone pays at the real rate.
Docs · South Korea: Currency exchange, skipped: the phone pays at the real rate.

Explainer

Docs: the full picture

Everything on this page exists to answer one question well: how does esimgomobile fit into your trip? The sections below go deep so you never need a second tab.

The long version is the rest of this page — plans, mechanics, edge cases and honest trade-offs, written the way we'd explain it to a friend.

The short version: prepaid travel eSIMs across 195 destinations, installed by QR code in two minutes, managed from a dashboard, with an AI agent on call when you need a human-style answer fast.

Explainer

How it works, step by step

  1. Buy before you fly
    • Order from home, the hotel, or the departure lounge — delivery is instant and digital.
    • No shipping, no pickup counters, no airport SIM queues.
  2. Add the eSIM
    • One QR scan adds the plan to your phone. iPhone and Android both walk you through it in under a minute.
    • You can install now and activate later — the plan starts when you choose.
  3. Stay online abroad
    • Data, maps, translation and messaging work the moment you land.
    • Running low? Top up in one tap from your dashboard — no new QR code needed.

Explainer

Good to know

  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.

These are the details that separate a smooth trip from a stressful one — small, unglamorous, and worth more than any feature list.

Explainer

Why travelers switch

And because everything is prepaid through Amazon Pay, the commercial relationship is simple: you pay for data, you get data, it ends when it ends.

Roaming bills taught a generation to fear their phones abroad. The eSIM generation simply never learned that fear — data is prepaid, visible and finite.

The Tele Agent closes the remaining gap: a question at midnight in a foreign terminal gets an answer in seconds, not a support ticket.

The data room

Every chart that matters for South Korea.

Docs — data dashboard

The product's headline numbers, switchable by dataset.

195
destinations live
global footprint
4
Atlas plans
prepaid, no contracts
~2 min
typical install
QR scan to online
6
app languages
EN ES FR DE PT JA
Atlas 5GB: 5 GB over 30 days — Weekend breaks & light useAtlas 5GB 5 GBAtlas 20GB: 20 GB over 30 days — Two-week trips & daily useAtlas 20GB 20 GBAtlas 50GB: 50 GB over 60 days — Remote work & hotspottingAtlas 50GB 50 GBAtlas Unlimited: Unlimited over 30 days — Heavy use, zero meteringAtlas Unlimited Unlimited
Atlas 5GB: 30-day validityAtlas 5GB 30 daysAtlas 20GB: 30-day validityAtlas 20GB 30 daysAtlas 50GB: 60-day validityAtlas 50GB 60 daysAtlas Unlimited: 30-day validityAtlas Unlimited 30 days
Illustrative — D1: 100% of maxIllustrative — D10: 70% of maxIllustrative — D20: 42% of maxIllustrative — D30: 12% of maxDay 1Day 10Day 20Day 30IllustrativeIllustrative 20 GB burn-down at moderate use.

Hover any bar or point for its exact value. Tabs switch datasets — everything on this panel is computed from live product data unless labeled illustrative.

Docs — data dashboard. Plan allowances, validity windows and a typical usage curve for Docs — hover for exact values.
Docs: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Mobile friendlyworks on the phone in your handInstant resultsno waiting, no signupAlways currentreflects live plans and coveragePrivate by designyour inputs stay in your browserShares wellsend the answer to travel companionsIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
What your gigabytes meanTypical hourly usage per activityWhat your gigabytes meanTranslate plan sizes into real travel behavior.Maps & navigation≈ 5 MB / hourMessaging & email≈ 20 MB / hourSocial browsing≈ 150 MB / hourVideo calls≈ 600 MB / hourHD streaming≈ 1.5 GB / hourTypical usage rates — actual consumption varies by app and quality settings.
Data usage guide. Maps sip, streaming gulps: size the plan to your heaviest habit.
How Docs worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Get the answerClear result with next steps — save it or act on it.2Apply itJump straight to the plan, setting or page it points to.3Enter your detailsTrip, data needs, destination. The tool does the math.4Open the toolNo account needed — it loads instantly in your browser.
Tool walkthrough. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Screenshot bookingsHotel address & confirmations, available with no signal.2Check unlock statusCarrier-locked phones can't add an eSIM — verify first.3Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.4Install before you flyAirport Wi-Fi is the worst place to set up connectivity.
Pro tips. Veterans do all four without thinking.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.5G where availableFastest local partner network, selected automatically.24/7 supportReal humans plus the Tele Agent, around the clock.Keep your WhatsAppYour existing number keeps working on the data line.6 languagesThe app speaks your language, wherever you're from.One-tap top-upMore data in seconds — no new QR code.Hotspot includedShare with your laptop or tablet at no extra cost.
Included with every plan. Six things ship with every plan — the Docs · South Korea baseline, generous on purpose.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.How fast is setup?
About two minutes: plan, QR scan, done.
Does hotspot work?
Yes — share your connection with laptop or tablet.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
FAQ at a glance. Still curious? The Tele Agent answers anything else instantly.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data2The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data3The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data4The family organizer
One tool, every traveler's needs covered.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Docs · South Korea's use cases.
Plan comparison matrixEvery plan for South Korea — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to South Korea.PLANDATAVALIDITYAtlas 5GBWeekend breaks & light use5 GB30 daysAtlas 20GBTwo-week trips & daily use20 GB30 daysAtlas 50GBRemote work & hotspotting50 GB60 daysAtlas UnlimitedHeavy use, zero meteringUnlimited30 days
Plan comparison matrix. All four Atlas plans work in South Korea; pick by trip length and appetite for data.
Network at a glanceCoverage facts for South KoreaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in South Koreaesimgomobile network data6app languagesesimgomobile network data2 mintypical install timeesimgomobile network dataPlus: local numbers where available, hotspot included, 24/7 support.Prepaid only — when the plan ends, it simply stops. No contracts.
Coverage facts. South Korea connects to the fastest available local partner network automatically.
Get connected in three stepsFrom purchase to online in about two minutesGet connected in three stepsNo store visit, no plastic SIM, no waiting for the post.1Pick your planChoose data for your trip — checkout takes about two minutes.2Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.3Land connectedSwitch the line on when you arrive — online before baggage claim.
Three-step setup. Install days before departure or minutes before boarding — your call.

Take South Korea with you, connected

Prepaid, no contracts, no roaming surprises. The whole setup takes about two minutes.

See plans and pricing Talk to the Tele Agent