Roaming in Europe: the good, the bad and the fine print

If you live in the European Union, you’ve had it good since 2017. The EU’s “Roam Like at Home” regulation means you can use your domestic plan’s calls, texts and data in any other EU/EEA country at no extra cost. Traveling from Germany to Spain, from France to Italy, from the Netherlands to Greece – your phone just works as if you were at home.

But “Roam Like at Home” has limits that many people don’t know about:

Fair use policies apply. Your carrier can set a fair-use data cap for roaming that’s lower than your domestic allowance. If you have an unlimited plan at home, that doesn’t necessarily mean unlimited data abroad. The exact cap depends on what you pay per month – carriers calculate it based on an EU-regulated formula. Once you hit that cap, your carrier can charge a small surcharge (currently capped at €2 per GB, excluding VAT). Check your contract or your carrier’s app to see your specific roaming allowance.

Not every European country is in the EU/EEA. Switzerland, Turkey, the UK (post-Brexit), Albania, Bosnia and Herzegovina – these are popular destinations that fall outside the EU roaming regulation. Use your phone in Turkey or Switzerland as if you were still in the EU, and you could face steep per-megabyte charges. Some European carriers include Switzerland or the UK in their plans voluntarily, but many don’t – or only at reduced speeds. Always check before you cross those borders.

Calls to other EU countries from home are capped, but not free. There’s a common misconception here. “Roam Like at Home” covers using your phone while traveling. Calling from your home country to another EU country is a different matter – those calls are capped at €0.19/min and texts at €0.06, but they’re not free. If you’re sitting in Berlin calling a hotel in Rome, you’re paying for an international call, not roaming.

Extended stays trigger scrutiny. The regulation is designed for travelers, not for people who buy a cheap SIM in one country and use it permanently in another. If your carrier notices you’re roaming more than you’re on your home network over a four-month period, they can contact you and eventually apply surcharges.

The UK after Brexit

Since leaving the EU, the UK is no longer covered by “Roam Like at Home” – though the situation is more nuanced than the headlines suggest. Many UK carriers voluntarily kept free EU roaming for a while, but several have since reintroduced charges or imposed data caps when roaming in Europe. EE, for example, charges £2.47/day for EU roaming on newer plans. Three and Vodafone have their own limits and fair-use caps.

Going the other direction, EU travelers visiting the UK face whatever terms their home carrier sets for non-EU countries. Some include the UK for free, others treat it as a paid zone. Check before you board the Eurostar.

What US carriers offer internationally – and where it falls short

The major US carriers – T-Mobile, AT&T and Verizon – all offer some form of international roaming, but the details vary wildly.

T-Mobile’s Magenta and Go5G plans include free texting and data in 215+ countries, but that data is often throttled to painfully slow 2G speeds unless you pay for a high-speed add-on. AT&T’s International Day Pass costs $12 per day and lets you use your domestic plan abroad – but that charge kicks in automatically every day your phone connects to a foreign network, even if you only checked one email. Verizon’s TravelPass works similarly at $10–14 per day depending on the country.

So far, so manageable. But the details are where the trouble starts.

Data isn’t always data. Even on plans that advertise international coverage, your high-speed data allotment abroad may be a fraction of what you get at home. T-Mobile’s free international data crawls at 256 kbps – fine for loading a text-based web page, useless for maps or video calls. AT&T’s Day Pass uses your domestic data bucket, which sounds generous until you realize a single day of vacation photo uploads can burn through gigabytes.

Calls to local numbers can surprise you. Your international plan might cover calls back to the US, but calling a local restaurant or your hotel’s front desk in the country you’re visiting? That might be billed differently – or not covered at all. Read the fine print before you dial.

Canada and Mexico are a special case. Most major US plans now include Canada and Mexico at no extra charge, which is great. But “included” doesn’t always mean “unlimited.” Some plans cap your high-speed data in those countries, and once you hit that cap, speeds drop dramatically. Also, if you’re on a budget carrier or an older plan, Canada and Mexico coverage may not be included at all.

Where it gets really expensive: outside your zone

Whether you’re an American in Southeast Asia, a European in Turkey or a Brit in the Caribbean – step outside your carrier’s included countries, and roaming rates can be staggering.

In parts of Africa, the Middle East, Southeast Asia or even some popular Mediterranean destinations outside the EU, data charges can run several dollars or euros per megabyte. One accidentally loaded video, an automatic cloud backup or a system update running in the background can rack up a bill in the hundreds. This isn’t a scare tactic – it happens to travelers all the time.

A few years ago, I took a family trip to Turkey. I figured I’d just use the hotel Wi-Fi and keep my phone on airplane mode otherwise. But an app had been syncing in the background before I switched it off, and I came home to a nasty surprise on my phone bill. I’ve been more careful ever since.

The key steps to protect yourself when traveling outside your plan’s coverage:

• Turn off cellular data roaming. Before you even land, disable data roaming. On iPhone, go to Settings → Cellular → Cellular Data Options → Data Roaming. On Android, it’s typically Settings → Network & Internet → SIMs → Data Roaming. This way, your phone only uses the internet when you deliberately connect to Wi-Fi.
• Buy a local SIM card or eSIM. In many countries, you can grab a cheap prepaid SIM at the airport or a local phone shop. Even more convenient: eSIMs that you buy and activate online before you leave home. Providers like Airalo, Holafly or Nomad offer eSIM data packages for nearly any destination – often just a few dollars or euros a week. The only requirement: your phone must support eSIM (most phones from the last few years do).
• Check your carrier’s travel add-ons. Most carriers offer day passes or travel packages for specific regions. US examples: T-Mobile’s International Pass gives you 15 GB of high-speed data for $50 for 30 days; AT&T’s International Day Pass is $12/day in 210+ countries; Verizon’s TravelPass runs $10/day in Canada and Mexico, $14/day elsewhere. European carriers typically offer similar “travel options” or “world packs” for non-EU destinations. These are almost always cheaper than pay-as-you-go roaming rates, but they’re usually more expensive than a local eSIM. A quick check in your carrier’s app before you leave can save a lot of money.

The trap on the water

Here’s one that catches people every year: cruise ships and ferries. The moment a ship leaves port and enters international waters, your phone often connects to the vessel’s onboard cellular network – and the rates are astronomical. We’re not talking a few dollars, but charges that can easily reach $5 to $15 per megabyte or more. This applies regardless of whether you’re on a US, European or any other carrier.

The same goes for airplanes that offer satellite-based cellular connections. Look very carefully at the pricing before you take your phone out of airplane mode at 35,000 feet.

The fix is simple: Turn on airplane mode while at sea and in the air. Use the ship’s or plane’s Wi-Fi if available – but check the prices first. Many cruise lines now offer Wi-Fi packages that, while not cheap, are worlds cheaper than the onboard cellular network.

Practical tips for any trip abroad

Whether you’re heading to Cancún or Copenhagen, Bali or the Balkans, a few quick steps before departure can save you real money and real headaches:

Turn off automatic updates. System updates, app updates and cloud backups can chew through data in the background without you noticing. Set all of these to “Wi-Fi only.” On iPhone, go to Settings → General → Software Update → Automatic Updates. On Android, it’s Settings → System → Software Update. Also check your photo apps – iCloud Photos and Google Photos can upload gigabytes of vacation snapshots if you’re not careful.

Download offline maps. Google Maps, Apple Maps and OsmAnd all let you download map areas in advance. That way you can navigate without any cellular connection at all. This doesn’t just save data – it also works in areas with poor reception, which is half the fun destinations on the planet.

Use Wi-Fi calling instead of regular calls. When you make a call over Wi-Fi, it typically costs nothing extra – no matter where in the world you are. WhatsApp, Signal, FaceTime and even your phone’s built-in Wi-Fi calling feature all work over any Wi-Fi connection. Outside your carrier’s included countries, this is an enormous money saver.

Know your cost cap. EU regulations require carriers to set a default financial limit of €50 (excluding VAT) on mobile data roaming charges outside the EU. Once you approach that limit, your carrier must send you a warning, and data is cut off when you hit it – unless you actively choose to continue. This is a genuine safety net, but it only applies to EU-based carriers and only to roaming outside the EU. US carriers may offer similar spending limits, but they’re not always on by default. Check your carrier’s app or website before you travel so there are no surprises.

Set up Wi-Fi calling (VoWiFi). Most current plans and phones support Wi-Fi calling, which lets you make and receive regular phone calls over a Wi-Fi network as if you were on your home cellular network. It’s perfect for hotels with strong Wi-Fi but terrible cell reception – which describes about 90% of hotels. You’ll find the setting in your phone’s cellular or network settings.

What’s changed in 2026

The good news: things are getting better on both sides of the Atlantic. In the US, T-Mobile now includes 5G roaming in a growing number of countries for Go5G Next and above. AT&T expanded its Day Pass country list. And eSIM competition has driven prices way down – you can now get a week of data in most European or Asian countries for under $10.

In Europe, the EU roaming regulation was extended and updated, keeping “Roam Like at Home” in place through 2032. The data surcharge cap has continued to decrease, making fair-use overages less painful. Several European carriers have also started including the UK and Switzerland in their plans again, though this varies by carrier and plan.

The less good news: none of this happens automatically. You still have to know what your plan includes, what it doesn’t and what to do about the gaps. The carriers aren’t going to volunteer that information in big, friendly letters.

One thing worth watching: the EU has been in talks with the US and UK about mutual roaming agreements. Nothing concrete has materialized, but if it ever does, it would be a game-changer for transatlantic travelers. For now, though, crossing the Atlantic still means crossing into a different roaming zone – regardless of which direction you’re traveling.

Bottom line: ten minutes of prep, zero surprises

If you’re staying within the EU/EEA, “Roam Like at Home” has you covered – just know your fair-use limits. If you’re in the US sticking to domestic travel or heading to Canada and Mexico, most modern plans handle it well – just double-check your data caps. For everywhere else, a little preparation goes a long way: turn off data roaming, grab an eSIM or a local SIM, disable automatic updates and downloads. It takes ten minutes and can save you hundreds of dollars or euros.

And the best tip of all: putting your phone down and actually enjoying your vacation is still the cheapest roaming plan there is.

Have you ever been hit with a surprise roaming bill? Got a travel hack that’s saved you money abroad? Or a question this article didn’t answer? Drop it in the comments – I’d love to hear your stories.