The box that's missing from your Europe travel plan, and it's the one you'll use the most

Anyone planning a big trip to Europe usually does it with a remarkable level of detail.

Flights compared for weeks. Hotels booked one by one after reading reviews. Trains between cities bought from Mexico because they work out cheaper. Museum tickets reserved months in advance because they sell out. Travel insurance arranged. Currency exchanged back home. Suitcase weighed before leaving. And very often all of it organized in a spreadsheet with several tabs.

And in almost all of those spreadsheets, the same line is missing.

Madrid and the real weight of Europe

It helps to put the destination in context. In the ranking of the most-booked international destinations by Mexicans in 2025, Madrid comes in fourth place, ahead of most European cities and a good share of beach destinations.

Source: 2025 international destinations ranking compiled by Despegar.

And the overall volume keeps growing: 6,641,155 residents of Mexico traveled abroad in September 2025, up 10.4 percent from the same month the year before.

Source: INEGI, International Travelers Survey.

Europe is not the most frequent destination for Mexican travelers, but it is one of the highest-ticket and most carefully planned. And precisely because of that, it is striking that this is the type of trip where the missing box shows up the most.

Why that box stays empty

It is not carelessness. It is a matter of mental categorization.

The things that go into a travel spreadsheet are purchases: flight, hotel, train, ticket, insurance. Things you pay for once and close out.

Internet is not perceived as a purchase. It is perceived as a service, something that is just there like electricity or water. And services do not get a spreadsheet line, because at home they simply exist.

The problem is that the moment you cross the border, it stops being a service that is just there and becomes a purchase you have to make. Nobody warns you about that change of state, and that is why the line never gets written down.

What is specific about a multi-country trip

When your itinerary includes several borders, two questions come up that do not exist on a single-country trip, and both are worth settling before you leave.

The first is coverage. Not all data plans cover multiple countries. Some are for a single destination and others cover an entire region. That is exactly the kind of detail you have to check product by product, the same way you check what a hotel includes, rather than taking it for granted.

The second is pricing. When you cross a land border, your phone switches networks. With roaming on your own carrier, that can mean moving to a different pricing zone mid-trip with no clear notification. It is one of the situations that creates the most uncertainty: you watch the carrier name change on the train screen and have no way of knowing what it is costing you.

With a prepaid plan that covers the region, that question disappears: the price is already paid and already closed.

A fact worth knowing about Europe

There is an asymmetry that explains a lot and surprises many Mexican travelers.

Since 2017, the European Union has banned roaming surcharges between its member countries. A resident of Spain crosses into France or Portugal and their phone keeps working with their usual plan, with no extra charges.

It is not different technology. It is the same antennas and the same carriers. The difference is regulatory.

For the Mexican traveler, that has a practical consequence and a bigger takeaway. The practical one is that the European resident sitting at the next table does not have to think about any of this. The bigger one is that charging differently is perfectly possible, and from Mexico it simply does not apply: international roaming is always paid.

The destination zone also matters

Before assuming Europe is a cheap destination for data, it's worth checking your carrier's table, because the groupings don't always match geographic intuition.

In Telcel's published catalog, there's a 15 GB package valid for 20 days for the US, Canada, Latin America, and Europe, and a Rest of the World package of 20 MB for 6,000 pesos.

Source: international roaming rates published by Telcel and registered in the Tariff Book with the Federal Telecommunications Institute.

An itinerary that includes a European country outside the preferred list, or a long layover in a third country, can completely change the bill. Ten minutes of checking before buying the ticket will clarify it.

What to put in that box

The practical alternative is to buy data in advance, from Mexico, for your travel region.

Digital profiles, called eSIMs, are a file you download to your phone over your home Wi-Fi, days before you leave. Here's what that gives you on a long, planned trip:

1. It's a number. You write it in your spreadsheet next to the hotel and insurance, and it stops being an unknown.
2. The price is fixed and prepaid, so there's no open usage that shows up on your bill weeks later.
3. Your Mexican SIM stays in. Your number, WhatsApp with all its groups, and your bank messages all keep working.
4. There's nothing to buy or install when you arrive, so your phone works from the airport concourse.

And there's one point that makes this a great fit for anyone who plans months ahead: the plan days run from first use at the destination, not from purchase, and you have 180 days to install it. You can buy it in February and travel in July without losing a single day.

Where the risk lies

The reasonable objection is: what if the plan doesn't work?

The useful answer isn't to promise it never fails, but to note where you'd discover the failure. Installed at home with days to spare, a problem is a twenty-minute annoyance with Wi-Fi and time to fix it or request a refund. Installed on landing, the same problem ruins the first day of a trip that cost months of savings.

Frequently asked questions

Can one plan work for several European countries?

It depends on the specific plan. There are regional plans that cover multiple destinations and single-country plans. That's the first thing to check on the product page before buying.

What about long layovers in a third country?

If the layover involves leaving the international zone and using your phone, you should check whether that country is covered. If you just stay in transit with your phone in airplane mode, it doesn't apply.

How do I check if my phone is compatible?

Open your dialer and type `*#06#`. If, in addition to the IMEI, a number called EID appears, your device supports digital profiles. Two warnings for Mexico: several Redmi and Xiaomi models sold here are the Latin American version and don't include it even if the international spec sheet for the same model says they do, and being unlocked is not the same as being compatible.

Can I use it to call hotels or restaurants in Europe?

Data plans don't include a local phone number or traditional calls. You call through messaging apps. For reservations that only accept phone calls, it's worth planning ahead.

What happens on trains between countries?

Your phone switches networks when you cross the border. With a prepaid regional plan, that doesn't mean any change in rate, because the price is already fixed.

Is it better to get a per-country plan or a regional one?

If your itinerary includes three or four countries in the same region, a regional plan is usually simpler to manage than several single-country plans, because it avoids having to switch profiles at each border. If the trip is to a single destination with a short layover, a country plan is enough.

What if two of us are traveling?

Each phone needs its own plan, because data usage is counted per line. On a couple's trip, that means two, not one. It's the same calculation you make for train tickets or museum entry fees.

What's worth remembering

• Madrid is the fourth most booked international destination for Mexicans, and Europe is the trip that requires the most planning.
• Internet connectivity is missing from almost every spreadsheet because it's seen as a service rather than a purchase.
• On a multi-country trip, you need to check two things before you leave: which countries the plan covers and what happens when you cross borders.
• Since 2017, Europeans haven't paid surcharges between their countries, which proves the limitation was never technical.
• It's the only line of the trip you use every hour of every day, and the only one almost nobody writes down.

PuraSIM sells data plans by destination that you buy and install from Mexico before traveling, with a fixed price, for more than 200 destinations. Customer service is by email and WhatsApp, with people who respond in English. There is no phone support.