How to Avoid Roaming Charges in Europe: The Settings Checklist

Maybe your trip is too short to justify buying anything extra. Maybe you're headed somewhere euRoam doesn't cover yet. Maybe you just haven't got around to it. Whatever the reason, if you're relying on your home carrier's roaming for this trip, the question isn't "eSIM or roaming" - you've already answered that. It's: which settings actually matter, and which ones are you probably about to get wrong? This is the checklist, not the pitch.

Where does your phone's data roaming switch actually live?

Two operating systems, two menus - here's exactly where to look.

On iPhone (iOS 26 and 27):

• Open Settings, then tap Cellular (labelled "Cellular Data" on some phones).
• If you have more than one SIM or eSIM active, tap the specific line first.
• Tap Cellular Data Options, then toggle Data Roaming off.
• Single-SIM users skip the line-selection step and see the toggle directly.
• If the toggle is greyed out and won't respond, check that Cellular Data itself is switched on first - Data Roaming is nested under it and won't work independently.

On Android (16 and 17, Pixel and stock builds):

• Open Settings, then Network & internet.
• Tap SIMs, then tap the SIM you're using for this trip.
• Tap Roaming, then toggle it off.
• On Samsung phones, this usually sits under Settings > Connections > Mobile networks instead - the exact wording shifts between One UI versions, so search your settings app for "roaming" directly if you can't find it there.
• There's no quick-settings tile for roaming on stock Android by default, which is itself a reason to leave it off as your baseline and only turn it on when you actually need it.

The gotcha that catches more people than you'd expect: on a dual-SIM or dual-eSIM device - say your home SIM plus a travel eSIM, or two eSIMs for two different trips - roaming is controlled per line, not with one global switch. Turning off roaming on the line you think is your home number doesn't do anything if you actually toggled the second line by mistake. Check both, and check which one is actually set as your primary data line before you leave.

How do you stay reachable without relying on a carrier feature?

Wi-Fi Calling sounds like the obvious fix, but it's a feature your specific carrier has to support and provision on your specific line and plan - plenty of carriers restrict it or don't offer it at all, so it's not something to build your whole plan around. A more universal fix: over-the-top messaging and calling apps, which run over any Wi-Fi connection without needing anything switched on at the carrier's end.

• WhatsApp - calls, video calls, and texts over Wi-Fi or data, and the default messaging app across most of Europe, so you'll likely want it installed locally anyway.
• Facebook Messenger - the same idea, useful if that's where your contacts already are.
• FaceTime - built into iOS, works over Wi-Fi with no setup, for calls to other Apple users.

Install and test whichever ones your contacts actually use before you fly - on your home Wi-Fi, not after landing when you need it working immediately. As long as you're connected to Wi-Fi, these work exactly as they do at home, regardless of what your carrier does or doesn't support.

Should background apps still be pulling data while you're away?

This is where iOS and Android genuinely work differently, so it's worth knowing which platform you're on rather than assuming one set of steps covers both.

On iPhone:

• Settings > General > Background App Refresh - a global or per-app three-way choice between Wi-Fi & Cellular, Wi-Fi Only, and Off.
• Settings > Cellular > Cellular Data Options - scroll down for a per-app list where you can turn off an individual app's cellular access entirely, forcing it to Wi-Fi only.
• There isn't a separate "allow apps to use data while roaming" switch distinct from Data Roaming itself - if Data Roaming is off, none of this matters for cellular data. These controls matter most if you leave Data Roaming on and just want to stop one particularly data-hungry app (cloud photo backup is the usual culprit) from chewing through data in the background.

On Android:

• Settings > Network & internet > Data Saver - a system-wide toggle that restricts background data broadly, with an allowlist for specific apps you want let through anyway.
• Settings > Network & internet > Mobile network > App data usage > [the app] > Background data - for control over one app specifically.
• Exact wording and menu depth vary between OEM skins and Android builds, so treat these paths as a starting point rather than gospel on every phone.

Have you actually checked for a roaming pass on your own plan?

Before assuming you're stuck on your carrier's default pay-per-megabyte roaming rate, check your own carrier's app or account settings for an existing roaming add-on or included allowance. Many carriers sell a flat per-day or per-gigabyte roaming pass that's considerably cheaper than the default rate, and some plans already include a baseline amount of roaming data at no extra charge that's easy to overlook if you've never had reason to check. This varies a lot by carrier and plan tier, so there's no universal number to quote here - it's genuinely worth five minutes in your carrier's app before you fly, rather than discovering after the trip that a cheaper option was sitting there the whole time.

What's the actual zero-cost fallback if you want total certainty?

If you want a setting that guarantees you can't be charged for roaming at all, full stop, it's this: turn on Airplane Mode, which kills all cellular radio including any roaming connection, and then manually switch Wi-Fi back on from within Airplane Mode. Both iOS and Android explicitly support keeping Wi-Fi active while Airplane Mode is on - Android will typically show a one-time notification confirming Wi-Fi is on in airplane mode the first time you do it.

If you've got WhatsApp, Messenger, or FaceTime set up beforehand (the earlier section), you can still call and message over Wi-Fi with the cellular radio completely off - zero roaming charge risk, by design rather than by hoping you toggled the right switch. For anyone who wants absolute certainty rather than trusting a single toggle, this combination is the real answer.

What's the quick version, if you're about to board?

None of this requires buying anything - it's just making sure the settings you already have are working for you instead of against you. If you'd rather sidestep the whole toggle-hunting exercise on a future trip, a dedicated regional eSIM is a different route entirely, with a flat known cost instead of carrier-dependent roaming terms - eSIM vs. roaming on your home plan walks through when that trade-off actually pays off, and the plans page has the current pricing if you want to compare.