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What is Data Roaming? Tips for using your phone abroad

Last updated: 17th Oct 2025

Estimated read time: 4 minutes

If you’re travelling internationally for your summer holiday this year, you need to think about mobile phone usage.
 
With most networks having their own lists of data roaming charges in place, you shouldn’t risk being caught out and paying more for your trip than you realise.
 
There are many things to consider when using your mobile in a different country, such as SIM cards for overseas travel, how much data you’ll need, which applications you plan on accessing, and how often you’re going to use them.
 
In this guide, we explain exactly what data roaming is, as well as providing tips on how to use your phone abroad.

family holding hands on a beach

What is data roaming?
What would I need to roam for?
Roaming with Asda mobile
Monitoring your data usage abroad
How much data do I need?

What is data roaming?

Data roaming is when you use your mobile phone data to access the internet while you’re in another country.

Instead of Wi-Fi, your phone will connect to an overseas network. As soon as this happens, data roaming charges can apply.

The amount you’re charged varies greatly depending on:

  • Your current provider
  • Your current deal
  • What country you’re in

Why is data roaming important?

While roaming, you’re using mobile data to access the internet and the various apps on your phone. It’s important to understand how roaming works and what sort of data allowance you have on your phone before travelling abroad.

Without the right information, you could find yourself completely out of data and feeling a bit disconnected in your new environment.

Be sure to check APN settings within your phone to make sure roaming works ahead of any big trips you’ve got planned overseas.

What would I need to roam for?

Everyone uses their mobile phone for different purposes, but while travelling abroad, you’ll likely be accessing multiple apps to help make your trip easier.

On holiday, you’ll need to enable your mobile data for the following:

  • Browsing the internet - Safari, Google Chrome, Bing, etc. - to ask questions or find new locations
  • Accessing messaging apps, such as WhatsApp or Facebook Messenger, to keep in contact with friends and family back home. You’ll also need to use your data to send an iMessage, if you have an iPhone
  • Refreshing and sending emails
  • Using Google Maps - or another navigation app - for directions
  • Scrolling through social media
  • Playing videos or streaming music

Roaming with Asda mobile

All our bundle users get up to 5GB of free roaming in 46 different European destinations. You can also text and call as much as you like (within the 46 destinations).

These include the Balearics and Canary Islands, so whether you’re Instagramming in Ibiza or taking tons of selfies in Tenerife to share with loved ones, we’ve got you covered with our international roaming rates.

Once you have used up to 5GB of data you will be charged 10p per MB, the same as you would pay for data in the UK. You will receive notifications when you reach 80% and 100% of the data limit.

Please keep in mind that the roaming allowance you get depends on your plan. For instance, if you’re on our £5 bundle, you’ll get 3GB of roaming as this is the maximum data limit for that bundle.

Our monthly bundles are:

Bundle cost

Bundle type

Data allowance

Roaming limit

£5.00

Standard

3GB

3GB

£7.00

Standard

5GB

5GB

£10.00

Standard

12GB

5GB

£15.00

Standard

25GB

5GB

£20.00

Standard

50GB

5GB

£25.00

Standard

100GB

5GB

£20.00

Unlimited

Unlimited (2Mbps speed cap)

5GB

£22.00

Unlimited

Unlimited (10Mbps speed cap)

5GB

£24.00

Unlimited

Unlimited (150Mbps speed cap)

5GB

My Account

Before you go abroad, use your online account to check, upgrade, or swap your bundle and data allowance.

If you’ve never used My Account before, here’s everything you need to know.

If you can’t access your online account whilst you’re abroad and you want to check your balance, text BAL to 2732.

Monitoring your data usage abroad

Remember to keep an eye on your data usage before going abroad, so you can find the most suitable deal well in advance of your trip.

At the same time, always check your data allowance while you’re away to avoid incurring any additional charges once you return home.

A few things you should do to monitor your data usage abroad include:

  • Connect to public Wi-Fi when possible to complete data-heavy tasks, e.g. downloading videos or pages to access offline
  • Use ‘Lite’ versions of social media apps, which help limit data usage because they are simpler versions
  • Turn off automatic background refreshes for applications
  • Disable automatic updates
  • Set data limits
  • Turn off Bluetooth and Location services when not in use to save data
  • Install an ad blocker

For more handy tips and tricks, we’ve put together a guide on how to check and monitor your mobile data usage.

How much data do I need?

How do you know how much data you’ll need when travelling abroad? Well, start by taking a look at our guides on what to do with set amounts of data:

Additional resources

We have a wide range of other articles that could be useful to you; give them a read before planning your trip abroad: 

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