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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.

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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.

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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 Vietnam

Using docs in Vietnam? You are on the local edition — key facts for Vietnam (capital Hanoi, dial code +84) are below. esimgomobile plans for Vietnam are live now — monthly plans from $8/mo and one-time travel packs from $3.65, with live checkout.

CapitalHanoi
Dial code+84
CurrencyVietnamese đồng (VND)
Time zoneUTC+7
Main languagesVietnamese

Plans are live — see plans and pricing.

How it works

Twenty screens, twenty photos.

A visual walkthrough built for this page — mockups of the exact experience plus photography from the field.

Coverage
195
destinations live
Vietnam5G ready
Check coverage
Coverage at a glance for Docs · Vietnam: 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.
Tele Agent
Do I need a local number in Vietnam?
A local Vietnam number is available on this plan — I can attach it before you land.
Tele Agent chat on Docs · Vietnam — real questions, specific answers, zero telecom jargon.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
the view from the top of a hill overlooking the ocean
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps on Docs · Vietnam: pick a plan, scan the QR, land online.
  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 · Vietnam: 31 free tools — 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.
Tiago Ventura
Vietnam is calling.
Get your eSIM
“Vietnam is calling.” — the banner on Docs · Vietnam: two minutes from curious to connected.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
eSIM installedYour Vietnam plan is ready.
Push · just now
Push notification on Docs · Vietnam: 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.
Speed test
203Mbps
5G · Vietnam · 85 ms
Illustrative speed readout on Docs · Vietnam: 203 Mbps, 85 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.
Recent speeds
Bali357 Mbps
Mexico City770 Mbps
Sydney139 Mbps
Recent speeds for Docs · Vietnam — Bali, Mexico City, Sydney: illustrative 5G figures, not live measurements.
  1. 1Coverage pins show where partner networks are live.
  2. 2The map answers the only question that matters: will it work there?
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Vietnam
The honest comparison on Docs · Vietnam: 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.
Why travelers pick it
  • Keep WhatsApp number
  • Instant QR install
  • 24/7 support
Why travelers pick Docs · Vietnam: Keep WhatsApp number, Instant QR install, 24/7 support.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Plans for Vietnam
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker on Docs · Vietnam: 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.
Virtual number
+1 205 912 1392
Routes toVietnam
SMS + voiceEnabled
Your second line on Docs · Vietnam: +1 205 912 1392 — 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.
Atlas 5GB
5 GB · 30 days
Vietnam
Atlas 5GB — 5 GB · 30 days, prepaid and ready on Docs · Vietnam.
  1. 1Usage ring compresses the whole plan into one glanceable number.
  2. 2Percent remaining is the only metric most travelers check.
wing of flying airplane
“Landed in Vietnam and was online before the seatbelt sign went off.”
Yuki N.Verified traveler · Vietnam
Traveler review for Docs · Vietnam: “Landed in Vietnam and was online before the seatbelt sign went off.” — Yuki N..
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Tele Agent
“Setting up your Vietnam line…”
AI voice agent on Docs · Vietnam — answers spoken aloud, never a support ticket.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Tele Agent transcript
Can I keep my WhatsApp number?
Yes — your eSIM is data-first, so WhatsApp keeps working on your existing number in Vietnam.
Tele Agent transcript on Docs · Vietnam: 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?
Network
5G
Vietnam connected
Network widget for Docs · Vietnam: 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.
esimgomobile.com
Dashboard
Active eSIMs4
Data left20 GB
Current cityVietnam
Web dashboard on Docs · Vietnam: every eSIM, every trip, 20 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.
eSIM plan
Atlas UnlimitedUnlimited · 30 days
Vietnam
Install eSIM
Atlas Unlimited on Docs · Vietnam — Unlimited · 30 days, prepaid with the full price shown before you pay.
  1. 1The Tele Agent answers in plain language — no telecom jargon.
  2. 2Every answer is specific to your trip, not a generic FAQ.
photo of city buildings
Ready for Vietnam?
Get your eSIM
Live now · no waitlist
“Ready for Vietnam?” — the CTA card on Docs · Vietnam: 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.
man video calling using a laptop while sitting on a chair — Docs · Vietnam: The docs answer before you ask — search first, it's fast.
Docs · Vietnam: The docs answer before you ask — search first, it's fast.
teddy bear sitting atop luggage left in airport — Docs · Vietnam: Downtown, connected: the eSIM finds the fastest local network on its own.
Docs · Vietnam: Downtown, connected: the eSIM finds the fastest local network on its own.
three women wearing formal clothes sitting in front of conference table — Docs · Vietnam: The red-eye recovery: hotel early-check-in arranged mid-flight.
Docs · Vietnam: The red-eye recovery: hotel early-check-in arranged mid-flight.
man drinking coffee while working on his laptop — Docs · Vietnam: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Docs · Vietnam: Travelers stay online from the moment they land — no SIM queues, no roaming shock.
Enrique — Docs · Vietnam: API references with copy-paste curl — the docs respect your time.
Docs · Vietnam: API references with copy-paste curl — the docs respect your time.
corner facade of a building in a city — Docs · Vietnam: Rooftop check-in: boarding passes and hotel keys, all on the phone.
Docs · Vietnam: Rooftop check-in: boarding passes and hotel keys, all on the phone.
woman in a white shirt smiling while holding her headset — Docs · Vietnam: Coast roads and country lanes — the map keeps up wherever you roam.
Docs · Vietnam: Coast roads and country lanes — the map keeps up wherever you roam.
skyscrapers in manhattan in new york — Docs · Vietnam: The conference badge: QR ticket scanned, session schedule synced.
Docs · Vietnam: The conference badge: QR ticket scanned, session schedule synced.
using a laptop and drinking coffee — Docs · Vietnam: Currency exchange, skipped: the phone pays at the real rate.
Docs · Vietnam: Currency exchange, skipped: the phone pays at the real rate.
the view of a white building on a hillside — Docs · Vietnam: Golden hour, fully online — photo backups upload before dinner.
Docs · Vietnam: Golden hour, fully online — photo backups upload before dinner.
Brown Desert Under the Blue Sky — Docs · Vietnam: Museum afternoons with audio guides streaming, not buffering.
Docs · Vietnam: Museum afternoons with audio guides streaming, not buffering.
people walking on brown sand — Docs · Vietnam: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
Docs · Vietnam: Rainy-day backup plan: indoor attractions researched from the hostel bunk.
white jet on black tarmac — Docs · Vietnam: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Docs · Vietnam: Café office: hotspot running, video call stable, no hotel Wi-Fi roulette.
Rhian Sousa — Docs · Vietnam: Family group chat: location shared, dinner plans settled in minutes.
Docs · Vietnam: Family group chat: location shared, dinner plans settled in minutes.
children silhouette in airport terminal — Docs · Vietnam: Every guide shows the happy path and the three ways it breaks.
Docs · Vietnam: Every guide shows the happy path and the three ways it breaks.
a man standing on a mountain — Docs · Vietnam: Changelog-linked: every doc knows which release changed it.
Docs · Vietnam: Changelog-linked: every doc knows which release changed it.
church with dome and sea — Docs · Vietnam: The food tour: every recommendation looked up on the spot.
Docs · Vietnam: The food tour: every recommendation looked up on the spot.
teenagers walking out of sea — Docs · Vietnam: The viewpoint at golden hour: livestream the sunset to everyone back home.
Docs · Vietnam: The viewpoint at golden hour: livestream the sunset to everyone back home.
women and man sitting by table with laptop — Docs · Vietnam: The rental desk handshake: confirmation email open, license photo ready.
Docs · Vietnam: The rental desk handshake: confirmation email open, license photo ready.
people brainstorming at the office — Docs · Vietnam: Night markets and late trains — connected the whole way through.
Docs · Vietnam: Night markets and late trains — connected the whole way through.

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. 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

  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • Check that your phone is carrier-unlocked before you buy any eSIM — locked phones can't add one.
  • Screenshot your hotel address and booking confirmations — you'll want them with no signal.
  • WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
  • Download offline maps for your destination — they save data and work in dead zones.
  • 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

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.

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 data room

Every chart that matters for Vietnam.

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.
Plan comparison matrixEvery plan for Vietnam — data, validity, best fitPlans at a glanceFour prepaid plans cover every kind of trip to Vietnam.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 · Vietnam: four plans, four trip shapes — the matrix carries no fine print.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Screenshot bookingsHotel address & confirmations, available with no signal.2Keep home SIM for 2FABank codes still arrive while data runs on the eSIM.3Set an 80% alertA top-up should never surprise you mid-trip.4Check unlock statusCarrier-locked phones can't add an eSIM — verify first.
Pro tips. Four habits for smooth trips — pro tips for Docs · Vietnam.
Who it's forFour travelers, one toolWho it's forBuilt for real trip shapes, not personas.1The planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data2The last-minute flyer
Answer in minutes, eSIM installed before boarding.
esimgomobile network data3The remote worker
Size data for video calls and hotspotting with confidence.
esimgomobile network data4The family organizer
One tool, every traveler's needs covered.
esimgomobile network data
Use cases. If you recognize yourself here, the tool will pay for its click.
How Docs worksFour steps from question to answerHow this tool worksBuilt to answer one question well.1Open the toolNo account needed — it loads instantly in your browser.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.4Enter your detailsTrip, data needs, destination. The tool does the math.
Tool walkthrough. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
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 · Vietnam usage guide.
Every plan includesNo tiers of basic dignity — these ship with all plansEvery plan includesThe baseline is generous on purpose.Hotspot includedShare with your laptop or tablet at no extra cost.One-tap top-upMore data in seconds — no new QR code.6 languagesThe app speaks your language, wherever you're from.Keep your WhatsAppYour existing number keeps working on the data line.24/7 supportReal humans plus the Tele Agent, around the clock.5G where availableFastest local partner network, selected automatically.
Included with every plan. From 5 GB to Unlimited, the inclusions don't shrink.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.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.
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.
FAQ at a glance. Still curious? The Tele Agent answers anything else instantly.
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. Three steps, about two minutes — the Docs · Vietnam ritual, no store visit.
Network at a glanceCoverage facts for VietnamNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available in Vietnamesimgomobile 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. Vietnam connects to the fastest available local partner network automatically.
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 signupPrivate by designyour inputs stay in your browserShares wellsend the answer to travel companionsAlways currentreflects live plans and coverageIllustrative profile based on tool design — not measured telemetry.
Capability profile. Capabilities measured by traveler value, not feature count.

Take Vietnam with you, connected

Pick a plan, check out securely, scan the QR code — you're online before you land.

See plans and pricing Talk to the Tele Agent