Why roaming is so expensive — and how to avoid the bill

Why is roaming so expensive?

When you leave Spain and activate your phone in another country, your local carrier no longer controls the network you use. It must negotiate with foreign carriers — the so-called roaming partners — for your SIM to work on their towers. These interconnection agreements have a cost, and you end up paying that cost.

But the problem goes beyond that. Interconnection agreements were signed in many cases more than ten years ago, when mobile data was a luxury and consumption was measured in kilobytes. Today, a single one-minute video in medium quality consumes more data than a workday in 2010. Contracts have not evolved at the same speed as consumption, and carriers have no incentive to voluntarily reduce prices.

Furthermore, roaming operates in a market with little real competition at the destination. You cannot choose which foreign network you use: your carrier automatically decides which one it has an agreement with. This eliminates the market pressure that normally drives prices down.

The result: expensive roaming is structural, not accidental. And although the European Union regulated prices within its borders, outside the EU, there is no limit to protect travelers.

If you've ever wondered why roaming is expensive, the answer lies in this chain of unregulated intermediaries, stacked commercial margins, and outdated interconnection contracts that no one is in a hurry to renegotiate.

The problem of surprise bills when traveling

One of the most painful consequences of the high roaming price is not what you consciously consume, but what your phone consumes without your knowledge. Modern smartphones are silent data consumption machines: they update applications, sync photos to the cloud, download emails in the background, and send usage statistics permanently.

At home, this background consumption is invisible because you have an unlimited or very generous plan. When roaming, every megabyte has a unit price. A typical Android phone can consume between 50 and 200 MB daily just in background processes. At €10 per MB outside the EU, that's between €500 and €2,000 per day without even opening a single application.

This is not a hypothetical scenario. Roaming bills of four and five figures are a documented reality and have been the subject of lawsuits and complaints before the CNMC. Carriers are obliged to send alerts when you reach certain thresholds, but these alerts arrive late and sometimes the damage is already done.

How a surprise roaming bill arrives

1. The plane lands. The phone automatically searches for a network and connects.
2. The operating system starts syncing photos, pending updates, and emails.
3. You open WhatsApp to notify that you have arrived: images and videos are downloaded automatically.
4. You check the map to go to the hotel: Google Maps downloads high-resolution tiles.
5. In 20 minutes, you have consumed 500 MB which, outside the EU, can amount to hundreds of euros.

The only real solution is not to "be careful." It is to eliminate the problem at its root: deactivate the operator's data roaming and activate a fixed-cost eSIM that works without surprises.

How much does roaming really cost in 2026?

The roaming price varies enormously depending on the destination, the operator, and whether or not you have a travel package. These are the real ranges you will find in 2026:

Within the European Union

Since 2017, the "Roam Like At Home" regulation obliges European operators to apply the same rates within the EU without surcharges. In theory, you don't pay roaming within the eurozone. In practice, some operators apply data limits for EU roaming (different from the domestic limit), and if you exceed them, the surcharge appears.

Outside the European Union: real prices

As you can see, even operator travel packages have a daily cost that, accumulated, far exceeds the price of an eSIM for the entire stay. For a 10-day trip to the USA, the operator's travel package can cost between €80 and €150. The equivalent eSIM, between €8 and €20 with more data included.

You can compare the cheapest options available to decide which eSIM best suits your destination and trip duration.

Why eSIM is the most effective alternative

The most effective mobile roaming alternative in 2026 is the eSIM. It is not new or experimental technology: it has been integrated into iPhones since the XS (2018) and in virtually all mid-range and high-end Android phones since 2021. If you have a relatively recent phone, you already have eSIM available.

What is an eSIM and how does it work?

An eSIM (embedded SIM) is a SIM card integrated into your phone's hardware that can be programmed remotely. Instead of physically inserting a foreign SIM, you download an operator profile via a QR code or app. The process takes less than 5 minutes and you can do it from Spain, before leaving.

Advantages of eSIM over roaming

• Fixed and predictable price: You pay a fixed amount for a data package. No surprises.
• No intermediaries: You buy a local plan directly from the destination country, without the Spanish operator's margin.
• Functional Dual SIM: Keep your Spanish number active for calls and SMS, while using the eSIM for data. You don't lose contact.
• Pre-installation: You set it up at home before traveling. At your destination, you just have to activate it.
• Total control: You see how much data you have consumed in real-time from your phone settings.

For frequent travelers to Europe, eSIMs for Europe offer coverage in more than 30 countries with a single plan, completely eliminating the need for roaming throughout the region. For the rest of the world, international eSIMs cover more than 190 destinations.

If you want to understand the technical differences in depth, read our eSIM vs. roaming comparison where we analyze scenario by scenario which option is cheaper.

How to switch from roaming to eSIM without complications

Switching from roaming to eSIM does not require technical knowledge. The entire process can be completed in less than 10 minutes. Here's the step-by-step guide:

Step 1: Check compatibility

Check that your phone is eSIM compatible. Compatible models include:

• iPhone XS and later (all models from 2018)
• Samsung Galaxy S20 and later
• Google Pixel 3 and later
• Huawei P40 and later
• Most Android flagships from 2021 onwards

To confirm: on iOS go to Settings → General → About → eSIM available. On Android: Settings → Network & internet → SIMs → Add SIM.

Step 2: Choose your eSIM before leaving

Select your destination and trip duration at see roaming alternatives. Filter by country or region and choose the plan that best suits your usual consumption. For an average traveler, 5–10 GB is enough for a week.

Step 3: Install the eSIM (2 minutes)

You will receive a QR code by email. Scan it from Settings → Cellular → Add Cellular Plan. The profile will download automatically. Give it a name to identify it (e.g., "USA travel eSIM").

Step 4: Configure data usage

In SIM settings, set the travel eSIM as the active SIM for data. Keep your Spanish SIM active for calls and SMS (useful for banks, Bizum, etc.). Activate "Data roaming" only on the travel eSIM.

Step 5: Deactivate roaming on your Spanish SIM

This step is critical: go to Settings → Cellular → Spanish SIM → Deactivate data roaming. This eliminates any possibility of accidental roaming consumption from your usual operator.

Now you can travel worry-free. No surprise bills, no hidden costs, no expensive roaming.

Destinations where roaming hurts the pocket most

Not all destinations have the same economic impact on your roaming bill. There are countries where the difference between using roaming and using an eSIM can mean hundreds of euros in savings on a single trip.

North and South America

The USA, Mexico, Canada, and Brazil account for some of the highest roaming bills seen by Spanish travelers. Geographic distance makes interconnection agreements more expensive, and local operators have very different pricing structures from European ones. A week in New York with Spanish operator roaming can cost between €50 and €150 in travel packages, or much higher figures without a package.

Asia-Pacific

Japan, South Korea, Thailand, and Indonesia are high-risk destinations for roaming bills. Japan in particular has exceptional network infrastructure but extremely high interconnection costs. However, the local eSIM market in these countries is extremely competitive: you can get 20 GB for 15 days for less than €15.

Middle East and North Africa

Morocco, Egypt, United Arab Emirates, and Turkey are very frequent destinations for Spanish travelers where expensive roaming is particularly noticeable. Turkey, not being part of the EU, falls outside the "Roam Like At Home" regulation despite its geographical and cultural proximity. A week in Istanbul with roaming data can cost between €40 and €120.

Sub-Saharan Africa

Destinations such as Kenya, Tanzania, South Africa, or Senegal have the highest interconnection costs in the world. If you travel for a safari or cooperation projects, the roaming price can be astronomical. Regional African eSIMs, although less known, exist and offer very reasonable rates for data connectivity.

Islands and ultra-peripheral destinations

The Maldives, Cuba, Fiji, French Polynesia, or the Faroe Islands are destinations where connectivity is expensive due to their geographical position and the limited number of operators. eSIM may not be available in all cases, but when it is, the savings are very significant.

For all these destinations, see roaming alternatives available on PuraSim and compare prices before you leave.

Conclusion — Stop paying for roaming

Expensive roaming is neither inevitable nor irreversible. It is the result of an opaque interconnection system, excessive commercial margins, and the inertia of travelers who are unaware of the alternatives. Now you know them.

In 2026, paying operator roaming prices to travel outside the EU is simply unnecessary. eSIM offers the same coverage, the same data speed, and a price that can be up to 10 times lower. The installation process is simpler than unlocking a phone, and you can do it from your couch before heading to the airport.

The surprise roaming bill is a solved problem, provided you make the right decision before boarding the plane.

Frequently asked questions about expensive roaming

Escrito por Marc González Sáez Fundador de PuraSim y especialista en eSIM y conectividad para viajeros. Lleva años ayudando a viajar conectado por todo el mundo sin pagar de más por el roaming, y prueba personalmente las eSIM en cada destino antes de recomendarlas.