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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

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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.

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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 Saint Lucia

Using docs in Saint Lucia? You are on the local edition — key facts for Saint Lucia (capital Castries, dial code +1-758) are below. esimgomobile plans for Saint Lucia are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalCastries
Dial code+1-758
CurrencyEastern Caribbean dollar (XCD)
Time zoneUTC-4
Main languagesEnglish

Plans are live — see plans and pricing.

The experience

esimgomobile in action.

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

esimgomobile.com
Checkout
Atlas 20GB — Saint Luciatotal
Taxescalculated
Pay securely
256-bit encrypted · Amazon Pay
Secure checkout on Docs · Saint Lucia: Atlas 20GB, full price up front, no fine print.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
man with a backpack standing on a mountain slope
“My hotspot ran the whole Airbnb in Saint Lucia for two weeks.”
Chris D.Verified traveler · Saint Lucia
Traveler review for Docs · Saint Lucia: “My hotspot ran the whole Airbnb in Saint Lucia for two weeks.” — Chris D..
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
94%
data left
Usage ring on Docs · Saint Lucia — 94% of data left: the number travelers check most.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
Language
EspañolDeutschFrançais
Language picker on Docs · Saint Lucia — Español, Deutsch, Français: 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.
eSIM installedYour Saint Lucia plan is ready.
Push · just now
Push notification on Docs · Saint Lucia: eSIM installed, plan ready to activate.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
eSIM plan
Atlas 50GB50 GB · 60 days
Saint Lucia
Install eSIM
Atlas 50GB on Docs · Saint Lucia — 50 GB · 60 days, prepaid with the full price shown before you pay.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"SA"}'
200 OK · 157 ms
REST API behind Docs · Saint Lucia: issue eSIMs programmatically — 200 OK in milliseconds.
  1. 1Three plans side by side so the trade-off is obvious.
  2. 2Pick by trip length, not by decoding fine print.
Tele Agent
“Setting up your Saint Lucia line…”
AI voice agent on Docs · Saint Lucia — 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.
195
destinations live
launch fact
Launch fact behind Docs · Saint Lucia: 195 destinations live — 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.
Coverage
195
destinations live
Saint Lucia5G ready
Check coverage
Coverage at a glance for Docs · Saint Lucia: 195 destinations live, fastest local partner selected on its own.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
white and gray high rise buildings near body of water
Saint Lucia
eSIM dataLive
Local numberAvailable
5GYes
Coverage card on Docs · Saint Lucia: data live, local number available, 5G where it exists.
  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.
online class in a laptop
Your Saint Lucia number is waiting.
Get your eSIM
Live now · no waitlist
“Your Saint Lucia number is waiting.” — the CTA card on Docs · Saint Lucia: plans live now, no waitlist.
  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
394Mbps
5G · Saint Lucia · 82 ms
Illustrative speed readout on Docs · Saint Lucia: 394 Mbps, 82 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.
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Docs · Saint Lucia — 195 destinations live, 31 free tools, $8 entry monthly plan: numbers we publish and stand behind.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
esimgomobile.com
Dashboard
Active eSIMs3
Data left10 GB
Current citySaint Lucia
Web dashboard on Docs · Saint Lucia: every eSIM, every trip, 10 GB left — one screen.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
esimgomobile.com
vibrant nightlife in tokyo s bustling streets
Docs
Travel guides · 8 min read
From the blog: “Docs” — travel guides in about eight minutes.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
Saint Lucia · 5G
Signal widget on Docs · Saint Lucia: network generation and place, always visible.
  1. 1Signal widget: network generation and destination, always visible.
  2. 2Five bars, zero ambiguity about what you're connected to.
man in black jacket sitting on brown wooden folding chair using macbook
Pack light. Stay connected in Saint Lucia.
Get your eSIM
“Pack light. Stay connected in Saint Lucia.” — the banner on Docs · Saint Lucia: two minutes from curious to connected.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
My eSIM
35%20 GB left
Days left21
Top up+10 GB
Data dashboard on Docs · Saint Lucia: 35% remaining, days left, top-up one tap away.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Network
5G
Saint Lucia connected
Network widget for Docs · Saint Lucia: 5G, full bars — zero ambiguity about the connection.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
man in white dress shirt using a laptop — Docs · Saint Lucia: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Docs · Saint Lucia: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Rhian Sousa — Docs · Saint Lucia: The business trip: client deck synced, video call joined from the taxi.
Docs · Saint Lucia: The business trip: client deck synced, video call joined from the taxi.
modern smartphone triple camera close up shot — Docs · Saint Lucia: The window seat office: emails sent somewhere over the ocean.
Docs · Saint Lucia: The window seat office: emails sent somewhere over the ocean.
laptop standing on a table outside of a cafe with view of an alley — Docs · Saint Lucia: Souvenir hunting with live currency conversion in your pocket.
Docs · Saint Lucia: Souvenir hunting with live currency conversion in your pocket.
hiker admiring majestic albanian mountains — Docs · Saint Lucia: Hiking the ridge: trail map offline, emergency numbers saved.
Docs · Saint Lucia: Hiking the ridge: trail map offline, emergency numbers saved.
man in striped long sleeve and kufi video calling using a laptop — Docs · Saint Lucia: The connected trip: maps, messages and translation, all on one eSIM.
Docs · Saint Lucia: The connected trip: maps, messages and translation, all on one eSIM.
a man and woman having conversation while wearing headsets — Docs · Saint Lucia: The long layover: streaming, working and messaging, all covered.
Docs · Saint Lucia: The long layover: streaming, working and messaging, all covered.
photo of a woman on the screen of a laptop — Docs · Saint Lucia: Coworking abroad: laptop tethered, calls crisp, deadlines met.
Docs · Saint Lucia: Coworking abroad: laptop tethered, calls crisp, deadlines met.
man on a video call — Docs · Saint Lucia: The welcome home: eSIM deleted in one tap, no contract to cancel.
Docs · Saint Lucia: The welcome home: eSIM deleted in one tap, no contract to cancel.
a person holding black smartphone — Docs · Saint Lucia: The departure board flips: gate found, lounge located, all on the eSIM.
Docs · Saint Lucia: The departure board flips: gate found, lounge located, all on the eSIM.
one wtc in nyc — Docs · Saint Lucia: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Docs · Saint Lucia: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Man taking photo out of airplane window, capturing wing view with smartphone. — Docs · Saint Lucia: The docs are versioned — what you read matches what you run.
Docs · Saint Lucia: The docs are versioned — what you read matches what you run.
mother and child with suitcase walking indoors — Docs · Saint Lucia: Lost in the medina, found by GPS: the blue dot never lies.
Docs · Saint Lucia: Lost in the medina, found by GPS: the blue dot never lies.
a woman with headset inside a gray cubicle — Docs · Saint Lucia: Coast roads and country lanes — the map keeps up wherever you roam.
Docs · Saint Lucia: Coast roads and country lanes — the map keeps up wherever you roam.
aircraft propellers through a plane window — Docs · Saint Lucia: The sunrise ferry: tickets in the wallet app, timetable cached offline.
Docs · Saint Lucia: The sunrise ferry: tickets in the wallet app, timetable cached offline.
airplane over white clouds — Docs · Saint Lucia: The rental desk handshake: confirmation email open, license photo ready.
Docs · Saint Lucia: The rental desk handshake: confirmation email open, license photo ready.
Tholaal Mohamed — Docs · Saint Lucia: Rain or shine, the connection holds — weather doesn't throttle data.
Docs · Saint Lucia: Rain or shine, the connection holds — weather doesn't throttle data.
A couple enjoying a sunny day with smartphones and wine glasses on a rooftop in Portugal. — Docs · Saint Lucia: Family group chat: location shared, dinner plans settled in minutes.
Docs · Saint Lucia: Family group chat: location shared, dinner plans settled in minutes.
rising sun behind nyc downtown — Docs · Saint Lucia: Duty-free browsing: price-checked against home before buying.
Docs · Saint Lucia: Duty-free browsing: price-checked against home before buying.
Acey Ramirez — Docs · Saint Lucia: Old town, new tricks: translation apps working in real time.
Docs · Saint Lucia: Old town, new tricks: translation apps working in real time.

Explainer

Docs: the full picture

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.

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.

Explainer

How it works, step by step

  1. Choose data that fits the trip
    • Short city break? 5 GB. Two weeks with maps and video calls? 20 GB. Working remotely or hotspotting? 50 GB or Unlimited.
    • Every plan shows exactly what you get — no asterisks.
  2. Install in two minutes
    • Buy, scan the QR code, done. The whole thing happens on your phone, wherever you are.
    • Install days before you fly or minutes before boarding — your call.
  3. Switch on and go
    • Enable the eSIM line in settings when you arrive. It connects to the fastest local partner network on its own.
    • Your home number keeps working for calls and texts on your physical SIM if you keep it active.

Explainer

Good to know

  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.
  • Set a data alert at 80% so a top-up never surprises you 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

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

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.

See the math

Saint Lucia, 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.
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. Gigabytes translated into hours — the Docs · Saint Lucia usage guide.
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.2Pick your planChoose data for your trip — checkout takes about two minutes.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.
Docs: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Private by designyour inputs stay in your browserMobile friendlyworks on the phone in your handShares wellsend the answer to travel companionsAlways currentreflects live plans and coverageInstant resultsno waiting, no signupIllustrative profile based on tool design — not measured telemetry.
Capability profile. Ranked by what travelers notice first, not by marketing priority.
Plan comparison matrixEvery plan for Saint Lucia — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Saint Lucia.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. Weekend sips, fortnight data, work-month gulps, or unlimited — pick by trip shape.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.2Install before you flyAirport Wi-Fi is the worst place to set up connectivity.3Check unlock statusCarrier-locked phones can't add an eSIM — verify first.4Download offline mapsThey save data and work in dead zones.
Pro tips. Veterans do all four without thinking.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
How fast is setup?
About two minutes: plan, QR scan, done.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
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.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
FAQ at a glance. Still curious? The Tele Agent answers anything else instantly.
Network at a glanceCoverage facts for Saint LuciaNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Saint Luciaesimgomobile 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. Saint Lucia connects to the fastest available local partner network automatically.
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.6 languagesThe app speaks your language, wherever you're from.One-tap top-upMore data in seconds — no new QR code.24/7 supportReal humans plus the Tele Agent, around the clock.Hotspot includedShare with your laptop or tablet at no extra cost.Keep your WhatsAppYour existing number keeps working on the data line.
Included with every plan. From 5 GB to Unlimited, the inclusions don't shrink.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The family organizer
One tool, every traveler's needs covered.
esimgomobile network data2The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data3The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data4The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Docs · Saint Lucia's use cases.
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.2Open the toolNo account needed — it loads instantly in your browser.3Enter your detailsTrip, data needs, destination. The tool does the math.4Apply itJump straight to the plan, setting or page it points to.
Tool walkthrough. Four steps from landing on Docs · Saint Lucia to having your answer.

Ready when Saint Lucia is

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

See plans and pricing Talk to the Tele Agent