Planned · v2

Never run dry mid-trip. Forecast the low point.

Set a threshold — say 500 MB — and we’ll alert you the moment your remaining data dips below it. Coming with real accounts at launch.

What it does

The alert you wish you’d had.

Every traveler knows the moment: maps stops loading in a taxi queue, in the rain, at midnight. A low-data alert is the cheapest insurance in travel tech — a nudge while you still have time to top up on Wi-Fi.

✓

Your threshold, your number

Alert me below 500 MB, 1 GB, whatever fits your trip. One setting — your threshold — and the tool does the rest.

✓

Polled, not guessed

A scheduled check reads your real remaining balance from the supplier API. No estimates, no “you’ve used about…” vagueness.

✓

Non-destructive

Creating an alert changes nothing about your plan — it’s a preference on your account, removable any time.

✓

Why v2?

Honest alerting needs two things that ship at launch: signed-in accounts, and a scheduled worker polling real usage. We won’t pretend with a fake toggle.

Honest status

“Low-Data Alert” is a planned v2 tool.

It isn’t live yet — and we won’t fake it. This tool requires: account auth + a scheduled worker that polls supplier usage and sends the alert. Until our backend ships, there’s no button here that pretends to work.

Join the pre-launch signup and we’ll notify you the moment this tool goes live for real accounts.

See pricing
Under the hood

Real parameters, real behavior.

In the esimgomobile ChatGPT app and API, this tool is called with exactly these parameters — nothing hidden, nothing invented.

ParameterTypeWhat it is
threshold_mbnumber (positive)Alert when remaining data drops below this many megabytes — e.g. 500.

How it works

  1. You’re signed in and set a threshold in megabytes.
  2. A scheduled worker polls your eSIM’s real remaining balance from the supplier API.
  3. The moment remaining data drops below your threshold, the alert fires.
  4. The alert is a preference on your account — create, change, or remove it any time.
Honest capability note

What this tool can and can’t do.

This tool is planned, not live: there’s no demo toggle here because a toggle without backend polling would lie to you. When it ships, it will be account-scoped (your thresholds, your balances) and strictly non-destructive. Until launch, the data-saver guide is your best defense against running dry.

Questions, answered

Before you ask.

What threshold should I set?
Enough for a top-up window: 500 MB–1 GB for most trips. That’s a day or two of moderate use — time to find Wi-Fi and top up calmly instead of panicking in a taxi queue.
How will the alert reach me?
Details ship with the launch implementation — the mechanism (email, push, SMS) will be announced with accounts. The guarantee: it fires on real polled usage, not estimates.
Does the alert cost data or money?
No. It’s a free account preference — reading your balance and sending the nudge costs you nothing.
Can I set different thresholds per eSIM?
That’s the design: thresholds attach to profiles, so your Japan eSIM and your EU eSIM can each have their own alert level.
What happens after the alert fires?
You top up from your dashboard (or let auto-top-up handle it) and the alert rearms. One alert per crossing — no spam.
Until launch, how do I avoid running out?
Two moves: set your phone’s built-in data warning (Settings → Cellular → data usage alerts) as a stopgap, and follow our data-saver guide to stretch every megabyte.
Keep exploring

Related tools.

My Active eSIMs

See live balances per profile at launch.

Open tool

Data-Saver Setup

Stretch your data until launch.

Open tool

Multi-Country eSIM Guide

Size the plan right from the start.

Open tool
🧰

All 31 free tools

Speed tests, dialing help, data estimators and more — every esimgomobile utility in one place.

Browse the toolbox
💳

Plans & pricing

Real eSIM data plus a real phone number — see the three tiers launching with esimgomobile.

See pricing
⚙️

Build on the API

Every tool here is also an API call. SDKs, CLI and an MCP server for developers and AI agents.

Developer docs
Plans available

Ready for your trip?

Compare data plans, destinations and prices.

See pricing

The experience

Every screen of the Low-Data Alert.

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

31
free tools
launch fact
Launch fact behind Low-Data Alert: 31 free tools — a fixed figure, not live telemetry.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
Install
1 Scan2 Add3 Go
Install flow — scan the QR Low-Data Alert points to, online in two minutes.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Low-Data Alert · 5G
Signal widget — 5G: the connection Low-Data Alert assumes.
  1. 1The plan chip: name, allowance and destination in one line.
  2. 2Everything you need to confirm you're on the right plan.
Low-Data Alert · coverage
5 carriers · automatic selection
Coverage map — the 195-destination network Low-Data Alert checks against.
  1. 1Mockups illustrate the product flow — captions describe what's real.
  2. 2Figures labeled as examples show sample data, never live telemetry.
eiffel tower under blue sky
Get connected
1 Pick a plan2 Scan QR3 Land online
Three steps with Low-Data Alert: ask, get the answer, act on it.
  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 man using laptop
Ready for your trip?
Get your eSIM
“Ready for your trip?” — the banner on Low-Data Alert: 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?
Launch facts
195destinations live
31free tools
$8entry monthly plan
Launch facts behind Low-Data Alert — 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?
Speed test
824Mbps
5G · Low-Data Alert · 34 ms
824 Mbps measured — the kind of figure Low-Data Alert factors into its answer.
  1. 1The plan card shows exactly what you're buying — data, days, destination.
  2. 2One tap starts the two-minute QR install.
Network
5G
Low-Data Alert connected
Signal widget — 5G, full bars: the connection Low-Data Alert assumes you have.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Why travelers pick it
  • Keep WhatsApp number
  • 24/7 support
  • 5G where available
Why travelers pick Low-Data Alert: Keep WhatsApp number, 24/7 support, 5G where available.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
woman with red cap talking on laptop
Pack light. Stay connected on your trip.
Get your eSIM
Live now · plans available
“Pack light. Stay connected on your trip.” — the CTA card on Low-Data Alert: plans live now, plans available.
  1. 1Coverage status at a glance: data live, number available, 5G ready.
  2. 2Green means go — no guessing about what's supported.
Language
PortuguêsEspañolDeutsch
Language picker on Low-Data Alert — Português, Español, Deutsch: 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.
esimgomobile.com
API quickstart
curl https://api.esimgomobile.com/v1/esims \
  -H "Authorization: Bearer $KEY" \
  -d '{"country":"LO"}'
200 OK · 127 ms
Developers: drive Low-Data Alert's data over the REST API — 200 OK in milliseconds.
  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 Low-Data Alert line…”
Voice mode — talk through Low-Data Alert's answer instead of reading it.
  1. 1Illustrative speed readout: sample carrier, city and latency figures.
  2. 2The meter demonstrates the readout — figures are examples, not live measurements.
Recent speeds
Mexico City726 Mbps
Seoul807 Mbps
Mexico City696 Mbps
Recent speeds for Low-Data Alert — Mexico City, Seoul, Mexico City: illustrative 5G figures, not live measurements.
  1. 1A real support transcript: the question, then the specific answer.
  2. 2This is what 'AI support' actually looks like in practice.
esimgomobile.com
Josh Hild
Low-Data Alert
Travel guides · 8 min read
From the blog: “Low-Data Alert” — deeper reading behind Low-Data Alert.
  1. 1Checkout shows the full price before you pay. Nothing hidden.
  2. 2Amazon Pay handles payment securely; taxes are calculated for you.
vs roaming
esimgomobile eSIMone price
Carrier roamingper-day fees
10 GB · 14 days · Low-Data Alert
Why Low-Data Alert exists: one prepaid price versus per-day roaming fees.
  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.
Virtual number
+1 205 179 9951
Routes toLow-Data Alert
SMS + voiceEnabled
Second line on demand: +1 205 179 9951 — Low-Data Alert for calls, not just data.
  1. 1A real traveler quote, tied to the destination it mentions.
  2. 2Reviews reference actual trips, not generic praise.
esimgomobile.com
Plans for Low-Data Alert
Atlas 5GB5 GB · 30 days
Atlas 20GB20 GB · 30 days
Atlas 50GB50 GB · 60 days
Compare plans
Plan picker — compare the plans Low-Data Alert can recommend, side by side.
  1. 1The dashboard keeps every eSIM, every trip, in one place.
  2. 2Rows show data left, days left and current city at a glance.
Support
How does Low-Data Alert work?
Enter your trip details and get an instant answer — no account needed.
Support on Low-Data Alert: how it works, answered with no account needed.
  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.
moody eiffel tower view on a rainy day — Low-Data Alert runs in your browser session — nothing sensitive stored against you.
Low-Data Alert runs in your browser session — nothing sensitive stored against you.
woman holding iphone in hand — The spec grid shows exactly what Low-Data Alert accepts and what it returns.
The spec grid shows exactly what Low-Data Alert accepts and what it returns.
hiker trekking through snowy mountain landscape — The capability matrix lists everything Low-Data Alert does — no asterisks.
The capability matrix lists everything Low-Data Alert does — no asterisks.
turquoise door and window on white concrete wall — Low-Data Alert: built for the airport sprinter and the careful planner alike.
Low-Data Alert: built for the airport sprinter and the careful planner alike.
woman in video meeting at work — Low-Data Alert links every answer onward — usually the plan it recommends.
Low-Data Alert links every answer onward — usually the plan it recommends.
anonymous ethnic worker writing near laptop on cafe terrace — Low-Data Alert: the fastest way to turn a vague travel question into a next step.
Low-Data Alert: the fastest way to turn a vague travel question into a next step.
hand holding phone — Every run of Low-Data Alert is free — no credits, no paywall, no expiring trial.
Every run of Low-Data Alert is free — no credits, no paywall, no expiring trial.
Oleksiy Yeshtokyn,🌻🇺🇦🌻 — From question to next step: Low-Data Alert shortens the path to a decision.
From question to next step: Low-Data Alert shortens the path to a decision.
eiffel tower against grey sky — Low-Data Alert: tell it about the trip, get the answer in under a minute.
Low-Data Alert: tell it about the trip, get the answer in under a minute.
Rhian Sousa — From Low-Data Alert's answer to checkout is a short, well-lit path.
From Low-Data Alert's answer to checkout is a short, well-lit path.
tourist hiking in grassy mountains — No account, no install, no waiting — Low-Data Alert loads and answers.
No account, no install, no waiting — Low-Data Alert loads and answers.
man looking at a woman in a laptop screen — Low-Data Alert works for anonymous visitors — answers first, signup never forced.
Low-Data Alert works for anonymous visitors — answers first, signup never forced.
vibrant neon cityscape of tokyo at night — The FAQ below Low-Data Alert answers the six questions everyone asks first.
The FAQ below Low-Data Alert answers the six questions everyone asks first.
Mathias Reding — Low-Data Alert computes the moment you submit — no queues, no waiting room.
Low-Data Alert computes the moment you submit — no queues, no waiting room.
black headset with mouthpiece — Low-Data Alert: one question, answered well, instead of ten open tabs.
Low-Data Alert: one question, answered well, instead of ten open tabs.
a call center agent working — Low-Data Alert: answers first, never a signup wall.
Low-Data Alert: answers first, never a signup wall.
amazed daughter and mother in airport hallway — Low-Data Alert remembers, so repeat travelers barely type.
Low-Data Alert remembers, so repeat travelers barely type.
oia village on santorini — Low-Data Alert accepts your trip details and hands back a clear recommendation.
Low-Data Alert accepts your trip details and hands back a clear recommendation.
Jess Loiterton — Low-Data Alert links every answer onward — usually the plan it recommends.
Low-Data Alert links every answer onward — usually the plan it recommends.
Blue and White Sea Foam — Low-Data Alert: the fastest way to turn a vague travel question into a next step.
Low-Data Alert: the fastest way to turn a vague travel question into a next step.

Explainer

How Low-Data Alert works

  1. Open the tool
    • No account needed — Low-Data Alert runs right in your browser.
    • Everything happens on the page; nothing to install.
  2. Enter your details
    • Answer the few questions the tool asks — trip, destination, dates.
    • The tool validates as you type so mistakes get caught early.
  3. Get your answer
    • Results appear instantly, computed from your inputs.
    • Every result links onward to the next step — usually a plan or checkout.
  4. Act on it
    • Apply the result: pick a plan, install the eSIM, or save the guidance.
    • You can rerun the tool any time; your last inputs are remembered.

The pattern is always the same: tell the tool a little about your trip, and it does the research you'd otherwise do across ten tabs.

Tools are free and instant. They're the fastest way to turn a vague travel question into a concrete next step.

Explainer

When to use Low-Data Alert

  • At the airport: for last-minute answers when plans change.
  • Mid-trip: when you need to top up, switch plans, or check what's next.
  • While planning: before you book anything, so connectivity is priced into the trip.
  • After the trip: to review what you used and plan smarter next time.

Bookmark it — travel questions have a habit of returning at the worst moment.

Most travelers use Low-Data Alert once while planning and once on the road. Both visits take under a minute.

Explainer

Tips for best results

  • Buy and install your eSIM before departure — airport Wi-Fi is the worst place to set up connectivity.
  • Set a data alert at 80% so a top-up never surprises you mid-trip.
  • If a page won't load, toggle airplane mode for ten seconds — it forces a fresh network attach.
  • Charge your phone before long travel days; weak signal areas drain batteries faster.
  • Turn off auto-play on social apps before you fly; it quietly eats roaming data.
  • Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.

The tool is only as good as its inputs — a rough date range beats a perfect one you never enter.

If a result surprises you, rerun with different inputs. Exploring the options is the point.

Explainer

What happens next

From here the path is short — pick a plan, check out through Amazon Pay, scan the QR code, and you're done.

Every tool result points somewhere useful: usually a plan that fits, sometimes a guide that goes deeper.

And if you'd rather talk it through, the Tele Agent answers the same questions conversationally, any time.

Feature availability

Every capability of Low-Data Alert, listed

The complete availability matrix — what Low-Data Alert does, what it accepts, and what you can count on. No asterisks.

CapabilityStatusWhat it means for you
Private by designIncludedYour inputs are processed in your browser session; nothing sensitive is stored against you.
Free to useIncludedEvery run of the tool is free. No credits, no paywall, no trial that expires mid-trip.
Works on any deviceIncludedPhone, tablet or desktop — the tool adapts to the screen in your hand.
Instant resultsIncludedComputation happens the moment you submit. No queues, no waiting room.
Onward linksIncludedEvery result links to the natural next step — the plan, guide or checkout it points to.
Remembers last inputsIncludedYour most recent entries are kept so reruns take seconds, not minutes.
Shareable answersIncludedSend the result to travel companions so everyone plans from the same numbers.
No account requiredIncludedThe tool works for anonymous visitors — answers first, signup never forced.

Specifications

Low-Data Alert: inputs and outputs

What you provide

Your trip detailsValidated as you type · optional unless marked

What you get back

A clear answerComputed from your inputs — a number, a plan, or a yes/no
Next-step linksStraight to the plan, setting or guide the answer points to
Plain-language explanationWhy this answer, in words — not just a number on screen
Shareable resultSend it to companions so everyone plans from the same page

Capabilities

What Low-Data Alert is built to do well

Companion to the Tele Agent

Prefer conversation? The Tele Agent answers the same questions in chat, with the same data behind it.

Rerun friendly

Change one input and see the answer update — exploring options is the whole point.

Works offline-ish

Once loaded, the tool keeps working through flaky airport Wi-Fi for the inputs you've already entered.

Trip-aware math

Results account for trip length, destination and usage profile instead of giving one-size-fits-all numbers.

Validated inputs

Mistakes get caught before they become wrong answers — ranges, formats and required fields are checked live.

Plain-language output

No telecom jargon in the results. If a term needs explaining, the tool explains it inline.

Use cases

Who reaches for Low-Data Alert

The airport sprinter

Flight delayed, plans changed? Get the answer in under a minute at the gate.

The budget hawk

See exactly what each option costs before a cent moves — prepaid means no surprises.

The remote worker

Size data for video calls and hotspotting with confidence, not guesswork.

The family organizer

One tool covering every traveler's needs — run it once per person, compare, done.

The repeat traveler

Saved inputs make the second, third and tenth run nearly instant.

The planner

Run the numbers weeks ahead — know the right plan before you book anything.

FAQ

Questions about Low-Data Alert

How accurate are the answers?

They're computed from your inputs against current plan and coverage data. Garbage in, garbage out — so the tool validates inputs as you type.

What happens after I get an answer?

Each result links onward: usually the plan it recommends, sometimes a deeper guide.

Does the tool cost anything?

No. Every tool on esimgomobile is free to use, as many times as you like.

Can I use it on my phone?

Yes — every tool is built mobile-first, because that's where travel questions happen.

Do I need an account?

No — tools work for anonymous visitors. If you do have an account, your last inputs are remembered.

Is my data shared?

Your inputs stay in your browser session. We don't sell tool usage data, and there's no ad tracker watching the form.

Visual guides

The numbers behind Low-Data Alert.

Low-Data Alert — capability dashboard

What the tool accepts, what it does best, and what it points to.

1
inputs accepted
validated as you type
$0
cost per run
free, unlimited
<1s
answer time
computed instantly
0
account needed
anonymous friendly
Input 1: Trip details — accepted and validated by the toolTrip details 1 input
Instant results: computed the moment you submitInstant results no signupMobile friendly: built for the phone in your handMobile friendly any screenAlways current: reflects live plans and coverageAlways current live dataPrivate by design: inputs stay in your browser sessionPrivate by design in-browserShares well: send the answer to travel companionsShares well send results
Atlas 5GB: 5 GB over 30 days — the plans this tool can recommendAtlas 5GB 5 GBAtlas 20GB: 20 GB over 30 days — the plans this tool can recommendAtlas 20GB 20 GBAtlas 50GB: 50 GB over 60 days — the plans this tool can recommendAtlas 50GB 50 GBAtlas Unlimited: Unlimited over 30 days — the plans this tool can recommendAtlas Unlimited Unlimited
Illustrative — Q1: 35% of maxIllustrative — Q2: 52% of maxIllustrative — Q3: 68% of maxIllustrative — Q4: 85% of maxQ1Q2Q3Q4IllustrativeIllustrative adoption curve — travelers who plan connected earlier each trip.

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.

Low-Data Alert — capability dashboard. Every input Low-Data Alert accepts, its capability profile, and the plans it can recommend — hover for detail.
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.Keep your WhatsAppYour existing number keeps working on the data line.5G where availableFastest local partner network, selected automatically.6 languagesThe app speaks your language, wherever you're from.24/7 supportReal humans plus the Tele Agent, around the clock.
Included with every plan. From 5 GB to Unlimited, the inclusions don't shrink.
Pro tipsFour habits of the always-connectedPro tipsSmall habits, big difference.1Download offline mapsThey save data and work in dead zones.2Set an 80% alertA top-up should never surprise you mid-trip.3Install before you flyAirport Wi-Fi is the worst place to set up connectivity.4Screenshot bookingsHotel address & confirmations, available with no signal.
Pro tips. Veterans do all four without thinking.
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 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 planner
Compare before you commit — know the right plan weeks ahead.
esimgomobile network data
Use cases. Six traveler shapes, one tool — Low-Data Alert's use cases.
Before / afterThe old way versus the tool wayBefore / afterWhat changes when the tool does the work.BEFORE
Tab-hopping between carrier pages, decoding footnotes.
AFTER
One screen: the answer, with next steps attached.
Before and after. The old ritual versus the two-minute Low-Data Alert path.
Network at a glanceCoverage facts, network-wideNetwork at a glanceThe numbers that matter before you buy.195destinations liveesimgomobile network data5Gwhere available, auto-selectedesimgomobile 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.
How Low-Data Alert 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.3Enter your detailsTrip, data needs, destination. The tool does the math.4Get the answerClear result with next steps — save it or act on it.
Tool walkthrough. Every tool on esimgomobile follows the same honest pattern: input, math, answer.
Questions, answeredThe six things everyone asks firstQuestions, answeredShort answers, no sales pitch.What if data runs out?
80% alert, then one-tap top-up. No bill shock.
Do I keep my number?
Yes — WhatsApp & iMessage keep working on your existing number.
How fast is setup?
About two minutes: plan, QR scan, done.
Which phones work?
Any carrier-unlocked, eSIM-capable iPhone or Android.
Is it a contract?
No — prepaid. Service simply stops instead of charging extra.
Does hotspot work?
Yes — share your connection with laptop or tablet.
FAQ at a glance. Short answers, no sales pitch — the questions first, always.
Low-Data Alert: capability profileWhat the tool is good at — illustrative profileCapability profileFive strengths, ranked by what users feel first.Private by designyour inputs stay in your browserInstant resultsno waiting, no signupAlways currentreflects live plans and coverageMobile friendlyworks on the phone in your handShares wellsend the answer to travel companionsIllustrative profile based on tool design — not measured telemetry.
Capability profile. What Low-Data Alert does best — the capability profile, honestly ranked.
Low-Data Alert: input → outputWhat goes in, what comes outAnatomy of the answerThree inputs in, three useful things out.Your trip detailsDestination, dates, data habits.Your deviceeSIM compatibility checked automatically.Your budgetPrepaid only — the math stays honest.A clear recommendationPlan, size and timing spelled out.Next-step linksStraight to checkout or the relevant guide.No account requiredAnswers first, signup never forced.YOU PROVIDEYOU GET→
Input-output anatomy. Inputs in, answers out: the anatomy of an honest tool.
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.1Land connectedSwitch the line on when you arrive — online before baggage claim.2Scan the QR codeThe eSIM installs straight onto your phone. No store, no plastic SIM.3Pick your planChoose data for your trip — checkout takes about two minutes.
Three-step setup. Three steps, about two minutes — the Low-Data Alert ritual, no store visit.

Low-Data Alert, ready when you are

Free forever. Pair it with an eSIM plan and you're online before you land.

See plans and pricing Talk to the Tele Agent