Guía de viaje
The First Twenty Minutes: Why Landing with No Data is the Worst Part of the Trip
Almost every conversation about data abroad revolves around price: how many gigs, how much it costs, whether the package or the local SIM is cheaper.
And yet, when you ask someone who had a rough time on a trip what exactly went wrong, they almost never tell a story about money.
They tell a story about twenty minutes.

What actually happens between the plane and the street
The route is always similar, and along that route there are five things you solve with your phone — and none of them can wait.
- Letting someone know you arrived safely. There's almost always someone waiting for that message on the other end, and often that's the reason they haven't gone to sleep yet.
- Confirming your hotel reservation, which is usually in an email or an app.
- Checking the exact address and figuring out what area it's in.
- Ordering a ride, or at least comparing whether the taxi line is worth it.
- Dealing with an unexpected issue, if there is one: a bag that didn't show up, a connecting flight that changed, someone who didn't make it to the meeting point.
All five need data. And all five happen before you reach the hotel — which is exactly where the Wi-Fi many travelers count on actually is.
The problem with airport Wi-Fi
The intuitive answer is to connect to the terminal's free network. In practice, it fails more often than people assume, and it fails for specific reasons.
Many airport networks require verification by text message or need you to accept a portal that only loads properly with an existing signal. The result is a closed loop: to connect, you need to already be connected.
Others work but limit you to thirty or sixty minutes, or block certain apps. And in many terminals, coverage is good in the departures area and poor in baggage claim or immigration — which is exactly where you're waiting.
There's something else, less technical but just as real: connecting to an unknown open network to enter login details for your email or banking app isn't the best idea, and many people do it because they have no alternative.
Why a local SIM doesn't solve those twenty minutes either
The second common answer is to buy a SIM at your destination. It's a reasonable suggestion in theory and very unrealistic at the exact moment this article is about.
Buying a local SIM means finding the store, standing in line, showing your passport, and in quite a few countries going through a registration process that can take hours. It also means taking out your home SIM, keeping it safe without losing it, and being without your own number for the duration of the trip.
And above all: all of that happens after those twenty minutes. By the time the local line is working, the moment you needed it has already passed.
The same goes for buying a digital plan when you land. To buy it, you need internet — and you don't have any.
You can get it sorted right now, from your own home, and it'll take less time than reading the rest of this article.
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The only way to have service at the gate
There is only one way for your phone to work the moment the wheels touch the runway: the line has to already be in your phone before takeoff.
That's possible today without a plastic SIM card. Digital profiles, called eSIMs, are a file you download to your phone from home, on your own Wi-Fi, days before the trip. When you land, your device connects to the local network at your destination without having to buy, install, or search for anything.
Three practical results that usually surprise people:
- You don't have to take out your local SIM. It stays in your phone. Your number, WhatsApp with all its groups, and your bank messages keep working exactly the same. The only thing that changes is where your data comes from.
- There's no counter and no line. Nothing to pick up when you arrive.
- The price is fixed and paid in advance, so there's no open balance that could show up on your bill weeks later.

The point almost nobody considers: where you find out something's wrong
The most common fear about buying data in advance is reasonable: what if it doesn't work?
The useful answer isn't to promise it never fails. It's to notice that what matters isn't whether it fails, but where you find out it failed.
If you install the profile when you land, any problem happens with no signal, no time, in another language, and with no backup plan. If you install it at home three or four days earlier, the exact same problem happens on a Tuesday night, with Wi-Fi, with room to maneuver, and with the option to fix it or ask for a refund without having left the country.
It's the same risk in both cases. What changes is the scenario — and the scenario changes everything.
This is only possible if the plan doesn't start counting down the moment you buy it. With PuraSIM, your days start from first use at your destination, not from purchase, and you have 180 days to install it. That's why you can buy it today, install and test it this very week, and travel two months from now without losing a single day.
A ten-second pre-check
Before buying anything, it's worth verifying that your device supports digital profiles. You can do it right on your phone, free, without installing anything.
Open the dialer and type `*#06#`. No need to call. A screen appears with your IMEI and, if your device is compatible, also a number called EID. If EID shows up, you're good to go.
Two specific warnings for Mexico:
- Several Redmi and Xiaomi models sold in the country are the Latin American version and don't include the component, even if the international spec sheet for that same model says otherwise.
- Unlocked is not the same as compatible. A phone bought from a carrier can have the component but be locked from using it.
If you're already clear on this, it's sorted in ten minutes and the discount applies automatically.
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What to have sorted, in order
For the specific twenty minutes this article is about, here's the short list:
- Check `*#06#` at home, before buying anything.
- Have your destination data plan installed and tested on your home Wi-Fi, days before flying.
- Save your hotel address as a screenshot in your gallery too — it works without internet.
- Download the offline map of the area, as a backup.
- Agree on a specific meeting point with your family, in case something goes wrong.
The last three are common sense and cost nothing. The first two are what prevent the problem at the root.
Questions that usually come up here
What if my flight is delayed or I change my layover?
It doesn't affect anything. The plan doesn't start counting from the flight date, but from first use at the destination. If the trip shifts by two days, the plan just waits.
Does it work right after landing, or do I need to do something?
If the profile was installed before leaving and was left activated as the data line, the phone registers on a local network as soon as you turn off airplane mode. There's no need to scan anything or open any app at the airport.
Can I get data for several people in the group?
Each phone needs its own plan, because billing is per line. This is the calculation almost nobody makes: four phones on a family trip means four separate data usages, not one.
Sharing data from a single device is possible on some plans and not on others, so it's worth checking before you buy rather than assuming. And in practice, relying on one phone for four people usually ends with that phone out of battery by mid-afternoon.
Does it work for calls?
Data plans are for data. They don't include a local phone number. Calls are made through messaging apps, which is how most people communicate these days.
It's good to know this in advance because certain specific tasks require a local number, like some verifications or calling a medical office at your destination. This is the most relevant limitation of this type of plan, and it's better to know about it beforehand than to discover it when you're there.
What about bank messages?
They still come through, because your Mexican line stays in the phone and remains active for receiving. That's precisely one of the reasons it's better not to swap the SIM for a local one.
A note on pre-trip anxiety, which also counts
There's a part of this that doesn't show up in any price comparison, yet people describe it over and over in forums: the discomfort of the days before the trip.
It's the person who goes to bed the night before mentally rehearsing how to get to the hotel by subway because they assume they won't have internet. The one who downloads offline maps and memorizes the street name. The one who warns their family they'll be unreachable for the first few hours and not to worry.
All of that is mental work done to compensate for something that can be solved at the root in ten minutes, any Tuesday, from the couch at home.
And on the other end is what happens when it is solved: nothing. There's no story to tell. The phone works in the jetway, you book a ride from the baggage carousel, you send the message before immigration, and the trip starts where it's supposed to start.
Why it matters more than it seems
An unexpected charge gets paid and forgotten in a few months. What people remember years later is something else.
It's being the one who organized the trip and not knowing how to get out of the terminal. It's the mother who stayed up waiting for a message that arrived two hours late. It's the child asleep on top of a suitcase while their parents try to connect to a network that asks for a code that can't arrive.
None of that is a story about gigabytes. It's a story about leaving the one thing you use all the time for the worst possible moment.
And it's the part of the trip that can be completely taken care of from your living room, in ten minutes, any Tuesday.
PuraSIM sells data plans by destination that you buy and install from Mexico before you travel, with a fixed price, for over 200 destinations. Customer support is by email and WhatsApp, with people who respond in English. There is no phone support.
Déjalo resuelto antes de subir al avión
Dinos a dónde vas y cuántos días. Te lo dejamos en el carrito con el descuento ya aplicado.
Más de 200 destinos disponibles.
Los días empiezan a contar cuando la usas allá, no cuando la compras.
- 180 días para instalarla
- Tu número y tu WhatsApp no se tocan
- Soporte en español por correo y WhatsApp