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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.
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Platform

The platform, in five parts

Coverage

195 country guides with install steps and local network notes.

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Plans

Data plus a permanent phone number on one eSIM line.

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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.

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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 Mongolia

Using docs in Mongolia? You are on the local edition — key facts for Mongolia (capital Ulaanbaatar, dial code +976) are below. esimgomobile plans for Mongolia are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalUlaanbaatar
Dial code+976
CurrencyMongolian tögrög (MNT)
Time zoneUTC+8
Main languagesMongolian

Plans are live — see plans and pricing.

Inside the app

esimgomobile in action.

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

Tele Agent transcript
What happens when my data runs out in Mongolia?
You get a heads-up at 80%, then one-tap top-up. No roaming-bill surprises in Mongolia.
Tele Agent transcript on Docs · Mongolia: real question, specific answer.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
Mongolia · 5G
Signal widget on Docs · Mongolia: network generation and place, always visible.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Сокіл Sokil
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Docs · Mongolia: pick a plan, scan the QR, land online.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
esimgomobile.com
modern smartphone displaying software update screen
Docs
Travel guides · 8 min read
From the blog: “Docs” — travel guides in about eight minutes.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Tele Agent
“Setting up your Mongolia line…”
AI voice agent on Docs · Mongolia — answers spoken aloud, never a support ticket.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
children watching airplane at istanbul airport
Mongolia is calling.
Get your eSIM
“Mongolia is calling.” — the banner on Docs · Mongolia: 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.
Why travelers pick it
  • Hotspot included
  • Instant QR install
  • 24/7 support
Why travelers pick Docs · Mongolia: Hotspot included, Instant QR install, 24/7 support.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Coverage
195
destinations live
Mongolia5G ready
Check coverage
Coverage at a glance for Docs · Mongolia: 195 destinations live, fastest local partner selected on its own.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Shainee Fernando
Mongolia
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Docs · Mongolia: data live, local number available, 5G where it exists.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
esimgomobile.com
Plans for Mongolia
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Docs · Mongolia: 5GB, 20GB, 50GB and Unlimited — pick by trip, not fine print.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
bright airport terminal with docked airplane view
Ready for Mongolia?
Get your eSIM
Live now · no waitlist
“Ready for Mongolia?” — the CTA card on Docs · Mongolia: plans live now, no waitlist.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"MO"}'
200 OK · 150 ms
REST API behind Docs · Mongolia: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
Support
How does Docs · Mongolia work?
Enter your trip details and get an instant answer — no account needed.
Support snippet — Docs · Mongolia: what it does, in one honest answer.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
Language
Deutsch日本語Français
Language picker on Docs · Mongolia — Deutsch, 日本語, Français: the app speaks six languages.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Mongolia
The honest comparison on Docs · Mongolia: one prepaid eSIM price versus carrier roaming.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
Speed test
731Mbps
5G · Mongolia · 36 ms
Illustrative speed readout on Docs · Mongolia: 731 Mbps, 36 ms — example figures, not live measurements.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
$8
entry monthly plan
launch fact
Launch fact behind Docs · Mongolia: $8 entry monthly plan — a fixed figure, not live telemetry.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
eSIM plan
Atlas UnlimitedUnlimited · 30 days
Mongolia
Install eSIM
Atlas Unlimited on Docs · Mongolia — Unlimited · 30 days, prepaid with the full price shown before you pay.
  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.
eSIM installedYour Mongolia plan is ready.
Push · just now
Push notification on Docs · Mongolia: eSIM installed, plan ready to activate.
  1. 1The roaming math, made visible: one price versus per-day carrier fees.
  2. 2This is the comparison most travelers never see until the bill.
photo of a black phone with cameras
“Switched plans mid-trip in Mongolia. Took about a minute.”
Chris D.Verified traveler · Mongolia
Traveler review for Docs · Mongolia: “Switched plans mid-trip in Mongolia. Took about a minute.” — Chris D..
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
close up photo of an operator working — Docs · Mongolia: The museum queue skips itself: tickets bought online, straight to the door.
Docs · Mongolia: The museum queue skips itself: tickets bought online, straight to the door.
Mathias Reding — Docs · Mongolia: Translated into six languages by humans who travel.
Docs · Mongolia: Translated into six languages by humans who travel.
Matthew DeVries — Docs · Mongolia: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Docs · Mongolia: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Guilherme Rossi — Docs · Mongolia: The rental desk handshake: confirmation email open, license photo ready.
Docs · Mongolia: The rental desk handshake: confirmation email open, license photo ready.
Manzoni Studios — Docs · Mongolia: Street level: navigation, rideshares and reviews, all instant.
Docs · Mongolia: Street level: navigation, rideshares and reviews, all instant.
Gaspar Zaldo — Docs · Mongolia: Island time, online time: ferries, beaches and full signal.
Docs · Mongolia: Island time, online time: ferries, beaches and full signal.
Kristian Bechthold — Docs · Mongolia: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Docs · Mongolia: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
group of people working together — Docs · Mongolia: Each doc ends with 'still stuck?' — pointing at the Tele Agent.
Docs · Mongolia: Each doc ends with 'still stuck?' — pointing at the Tele Agent.
Aedrian Salazar — Docs · Mongolia: Plazas and promenades: video calls home with the view behind you.
Docs · Mongolia: Plazas and promenades: video calls home with the view behind you.
a pair of women in bikinis sitting on beach shore — Docs · Mongolia: No PDF manuals — the docs live where the product lives.
Docs · Mongolia: No PDF manuals — the docs live where the product lives.
white clouds in the blue sky — Docs · Mongolia: Currency exchange, skipped: the phone pays at the real rate.
Docs · Mongolia: Currency exchange, skipped: the phone pays at the real rate.
man in black jacket sitting on brown wooden folding chair using macbook — Docs · Mongolia: The docs are versioned — what you read matches what you run.
Docs · Mongolia: The docs are versioned — what you read matches what you run.
scenic view of city during evening — Docs · Mongolia: From departure lounge to arrival hall, the data never drops.
Docs · Mongolia: From departure lounge to arrival hall, the data never drops.
affectionate mother and daughter — Docs · Mongolia: The last night: photo album backed up, memories safe before wheels-up.
Docs · Mongolia: The last night: photo album backed up, memories safe before wheels-up.
brooklyn bridge and manhattan skyline at sunset — Docs · Mongolia: Night markets and late trains — connected the whole way through.
Docs · Mongolia: Night markets and late trains — connected the whole way through.
building in city in japan — Docs · Mongolia: Real journeys, real connectivity — this is what the product is for.
Docs · Mongolia: Real journeys, real connectivity — this is what the product is for.
Saila Holidays Zanzibar — Docs · Mongolia: Rain or shine, the connection holds — weather doesn't throttle data.
Docs · Mongolia: Rain or shine, the connection holds — weather doesn't throttle data.
clouds seen from an airplane — Docs · Mongolia: The food tour: every recommendation looked up on the spot.
Docs · Mongolia: The food tour: every recommendation looked up on the spot.
three women wearing formal clothes sitting in front of conference table — Docs · Mongolia: The welcome home: eSIM deleted in one tap, no contract to cancel.
Docs · Mongolia: The welcome home: eSIM deleted in one tap, no contract to cancel.
man waiting for flight in airport — Docs · Mongolia: The docs assume you're at an airport — short, scannable, correct.
Docs · Mongolia: The docs assume you're at an airport — short, scannable, correct.

Explainer

Docs: the full picture

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.

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 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. Pick your plan
    • Choose data for your trip length — 5 GB covers a long weekend, 20 GB a fortnight, 50 GB or Unlimited a month of heavy use.
    • Checkout takes about two minutes through the secure Amazon Pay checkout.
  2. Scan the QR code
    • Your eSIM arrives instantly. Open your phone camera, scan, and the plan installs itself.
    • No store visit, no plastic SIM, no waiting for the post.
  3. Land connected
    • Turn on data roaming for the eSIM line when you land — you're online before baggage claim.
    • The eSIM finds the local partner network automatically.

Explainer

Good to know

  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.
  • Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.
  • Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.

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.

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

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

Charts & explainers

Mongolia, visualized.

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.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data2The family organizer
One tool, every traveler's needs covered.
esimgomobile network data3The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data4The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data
Use cases. If you recognize yourself here, the tool will pay for its click.
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.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.How fast is setup?
About two minutes: plan, QR scan, done.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Does hotspot work?
Yes — share your connection with laptop or tablet.
FAQ at a glance. Six questions every traveler asks — the Docs · Mongolia answers, one screen.
Plan comparison matrixEvery plan for Mongolia — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Mongolia.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. Docs · Mongolia: four plans, four trip shapes — the matrix carries no fine print.
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 handAlways currentreflects live plans and coverageInstant resultsno waiting, no signupShares wellsend the answer to travel companionsPrivate by designyour inputs stay in your browserIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
How Docs worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Enter your detailsTrip, data needs, destination. The tool does the math.2Apply itJump straight to the plan, setting or page it points to.3Get the answerClear result with next steps — save it or act on it.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.
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.1Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.2Land connectedSwitch the line on when you arrive — online before baggage claim.3Pick your planChoose data for your trip — checkout takes about two minutes.
Three-step setup. Three steps, about two minutes — the Docs · Mongolia ritual, no store visit.
Network at a glanceCoverage facts for MongoliaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Mongoliaesimgomobile 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. Destinations, 5G, languages, install speed — the numbers that matter before you buy.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.6 languagesThe app speaks your language, wherever you're from.24/7 supportReal humans plus the Tele Agent, around the clock.One-tap top-upMore data in seconds — no new QR code.Keep your WhatsAppYour existing number keeps working on the data line.Hotspot includedShare with your laptop or tablet at no extra cost.5G where availableFastest local partner network, selected automatically.
Included with every plan. 5G, hotspot, WhatsApp continuity, top-up, support, six languages — all tiers.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Install before you flyAirport Wi-Fi is the worst place to set up connectivity.2Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.3Download offline mapsThey save data and work in dead zones.4Check unlock statusCarrier-locked phones can't add an eSIM — verify first.
Pro tips. Veterans do all four without thinking.

Take Mongolia 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