Using your phone abroad: a guide to roaming charges and tips

Roaming policies vary dramatically between UK networks and change regularly with contract renewals. What applied to your last plan may not apply to your current one. EE, Vodafone, Three, and O2 all handle EU roaming differently. Some include European roaming on certain plans at no extra cost; others charge a daily fee, require a paid add-on, or have fair-use caps. The only way to know what's included in your plan is to check directly with your network before you travel.

Log into your network's app, check your account page, or contact customer service to confirm your roaming coverage for your destination. Do this before you pack, not at the airport.

Most UK networks have shifted to a daily pass model: you only pay on days you actually use your phone abroad, which sounds reasonable in theory. In practice, it adds up fast. A two-week holiday in Spain at £2 to £6 a day means you're looking at £28 to £84 in roaming charges before you've even paid for a flight or a hotel.

Outside Europe, standard pay-as-you-go rates can reach £5 to £8 per MB for data, £1 to £3 per minute for calls, and 50p to 75p per text.

Ofcom rules require your network to send you a roaming alert when you start using your phone abroad, tell you what charges apply, and remind you that you can set a spending cap. The cap does not make roaming cheap, but it prevents the worst surprises.

An eSIM is a digital SIM you download to your phone before you travel. Your UK SIM stays in place for calls and texts, while the eSIM handles data at local rates. Providers typically sell regional plans starting from £10 to £15 for 5GB, or unlimited 7-day plans from around £20 to £25. Prices vary by provider and coverage area, so check your chosen provider for current rates.

Your phone needs to support eSIM (most phones released since 2018 do) and be unlocked. Here's how you can check:

iPhone: Settings > General > About

Android: Settings > About > Phone > Status. If it shows 'No SIM restrictions', you're good to go.

For trips of two weeks or more, a local prepaid SIM bought at your destination is usually the cheapest option for data. You get a local number and local rates. The trade-off is that you lose your UK number while the local SIM is active, and you may need to show ID at the point of purchase. If you are visiting multiple countries, you would need a different SIM for each one, which is where a regional eSIM or your UK plan's roaming add-on tends to win on convenience.

If you've forgotten to sort out a roaming add-on or eSIM before you fly, don't panic. Just turn off data roaming the moment you land. You'll still be able to make and receive calls and texts, and you can grab Wi-Fi for everything else. This single step stops background apps from silently racking up charges the moment your phone connects to a foreign network. Here's how:

iPhone: Settings > Mobile Data > Data Roaming > off.

Android: Settings > Network > Internet > Mobile Networks > Data Roaming > off.

Also turn off background app refresh and set apps to update over Wi-Fi only. Social media, email, and cloud backup apps will all consume data in the background if you leave them running.

If your network supports it, Wi-Fi calling is a smart move abroad. It lets you make calls using your normal UK number over any Wi-Fi connection, and they deduct from your regular UK minutes as if you were at home. That means cheap or free calls back to the UK.

Here's the fine print: it only works for calls to UK numbers. Calls to other countries are charged at your network's standard international rates.

Before you leave, enable Wi-Fi calling in your phone settings and confirm with your network that it works in your destination.

GPS works without mobile data, so you can navigate without eating into your roaming allowance. Google Maps and Apple Maps both let you download entire areas for offline use. Before you leave, search for your destination in Google Maps, tap the city name at the bottom, and select "Download offline map". It's genuinely useful when you're exploring and don't want to rely on Wi-Fi or mobile data.

While you're at it, download content from Spotify, Netflix, and other apps you use. A few films or playlists take up way less data than streaming on the go. Do all of this on your home Wi-Fi before you travel, not at the airport when you're rushing.

Your phone sometimes picks up a signal from a network in a neighbouring country without you crossing a border. It's more common than you'd think, especially near borders or on coastlines. If you're near the English coast, your phone might grab a French network signal. Same goes for Cyprus near Turkey, or Corfu near Albania. Some microstates like Andorra, Monaco, and San Marino aren't usually included in UK networks' European roaming zones either, so watch out if you're heading there.

Before you travel to a border area, consider turning off automatic network selection and manually lock your phone to your UK network instead. Check your network's settings or contact customer service for region-specific options to restrict roaming to EU networks only.

The good news? Under Ofcom regulations, your provider must notify you if accidental roaming happens, so you'll catch it quickly instead of facing a surprise bill

When a cruise ship leaves port, your phone loses its connection to land-based towers and connects instead to the ship's satellite-based maritime network. Your UK carrier's roaming plan, including any daily pass or add-on you have bought, does not cover maritime satellite networks. Cruise satellite roaming costs can reach £5 to £20 per megabyte. A single hour of background data at sea can generate a very large bill. The fix is simple: put your phone on aeroplane mode as soon as the ship leaves port. If you need connectivity at sea, use the ship's Wi-Fi package, which most cruise lines sell in advance at a lower rate than the onboard price. When the ship docks at a port, you can turn aeroplane mode off and connect to land-based networks as normal.

All UK mobile providers are required to let you set a spending cap on your account. This limits how much you can be charged in a billing period, including roaming charges. Contact your network or use their app to set one before you travel. According to Ofcom, providers can only charge beyond the cap if you explicitly agree to it. A cap does not reduce your roaming costs, but it prevents a single trip from generating a bill you cannot predict.