How to Use Your Phone Abroad Without Paying Expensive Roaming Charges

Taking your phone abroad should make travelling easier, not leave you with an enormous mobile bill when you get home.

Your phone can be one of your most useful travel tools. You can use it for maps, translation, flight information, hotel bookings, transport, banking, messaging and staying in contact with friends and family.

The problem is that using your normal mobile plan overseas can sometimes result in expensive roaming charges, particularly if your destination isn't included in your existing allowance.

The good news is that there are several ways to use your phone abroad while keeping your mobile costs under control.

In this guide, we'll explain how international roaming works, how to avoid unexpected charges and how alternatives such as travel eSIMs and local SIM cards can help you stay connected without paying excessive roaming fees.

Why Can Using Your Phone Abroad Be Expensive?

When you travel internationally, your phone may connect to a foreign mobile network through an agreement between that network and your home mobile provider.

This is known as international roaming.

Depending on your mobile contract and destination, roaming may be included, available as an optional package or charged separately.

Charges can apply to mobile data, calls and text messages.

The biggest risk for many travellers is mobile data. Apps can use data in the background without you actively opening them, potentially increasing your usage while you're overseas.

How to Avoid Expensive Roaming Charges

There are several practical ways to reduce or avoid roaming costs.

• Check your mobile provider's international roaming rates before travelling.
• Find out whether your destination is included in your existing plan.
• Consider a travel eSIM.
• Consider a local SIM for longer stays.
• Use Wi-Fi where appropriate.
• Disable unnecessary background data.
• Turn off automatic app updates over mobile data.
• Monitor your data usage while travelling.

Taking a few minutes to prepare before departure can prevent an unpleasant surprise on your next bill.

Option 1: Use a Travel eSIM

For many international travellers, a travel eSIM is one of the easiest alternatives to traditional roaming.

An eSIM is a digital SIM profile that can be installed directly onto a compatible smartphone.

You can purchase a travel eSIM before departure and use it for mobile data when you arrive at your destination.

Instead of paying your home provider's roaming rates, you're using the data allowance included with the travel eSIM.

Advantages of travel eSIMs

• Can be purchased before travelling.
• No physical SIM card required.
• Often available as prepaid data plans.
• Can be used across multiple countries with regional plans.
• Compatible phones can often retain your normal SIM.
• Can make international data costs easier to predict.

If you're unfamiliar with the technology, our Travel eSIM Guide explains how eSIMs work and what to look for when choosing a plan.

Travel eSIM vs Roaming

The right option depends on your mobile provider, destination and travel requirements.

Feature	Travel eSIM	Traditional Roaming
Separate travel data plan	Yes	Usually no
Prepaid options	Common	Depends on provider
Can arrange before departure	Yes	Usually already available
Keep your existing SIM	Often possible	Yes
Multi-country options	Available with some plans	Depends on provider
Cost predictability	Often high	Depends on your plan

There isn't a universal winner. If your existing mobile plan includes generous international data, roaming may be the simplest option.

If roaming is expensive at your destination, a travel eSIM may provide a more flexible alternative.

For a detailed comparison, read our guide to Travel eSIM vs Roaming.

Option 2: Buy a Local SIM Card

A local SIM card can be another cost-effective option, particularly if you're staying in one country for several weeks or months.

Local mobile providers may offer prepaid data packages designed for residents or visitors.

Advantages

• Can offer competitive local data prices.
• May include a local telephone number.
• Useful for longer stays.

Disadvantages

• You need to obtain a physical SIM card.
• Your phone may need to be unlocked.
• You may need to visit a shop after arrival.
• Changing countries can mean changing SIM cards.

If you're travelling through multiple countries, a regional eSIM can often be more convenient.

Option 3: Use Wi-Fi

Wi-Fi is another way to reduce your reliance on mobile data while abroad.

Hotels, hostels, cafés, airports, restaurants and coworking spaces often provide Wi-Fi.

Using Wi-Fi for large downloads, software updates and video streaming can help preserve your mobile data allowance.

However, relying exclusively on public Wi-Fi isn't always practical.

You may need internet while walking around a new city, using public transport or travelling between destinations.

For that reason, many travellers use Wi-Fi alongside a travel eSIM rather than treating Wi-Fi as their only connection.

Turn Off Data Roaming on Your Normal SIM

If you're using a travel eSIM to avoid roaming charges, one of the most important steps is making sure your normal SIM isn't accidentally using mobile data overseas.

Modern smartphones allow you to select which SIM is used for mobile data.

Before travelling, check your device's SIM settings and select your travel eSIM as the preferred data connection.

You can also disable data roaming on your normal SIM.

The exact settings vary between iPhone, Samsung Galaxy, Google Pixel and other devices, so check your phone's instructions before departure.

Can You Keep Your Normal Phone Number Abroad?

In many cases, yes.

Phones that support dual-SIM functionality can allow you to keep your normal SIM active while using a travel eSIM for mobile data.

This can be useful if you need to receive important SMS messages or calls on your normal number.

However, keeping your normal SIM active doesn't necessarily mean roaming is completely disabled.

Check your phone settings carefully and understand how your mobile provider charges for calls, texts and data while overseas.

How to Stop Apps Using Data in the Background

Apps can consume mobile data even when you aren't actively using them.

Background activity can include synchronisation, notifications, automatic downloads and content refreshing.

Before travelling, review your phone's mobile data settings and restrict background data for apps that don't need constant connectivity.

Particularly data-hungry applications can include:

• Social media apps
• Cloud storage services
• Video streaming platforms
• Photo backup services
• App stores
• Automatic software update services

Disable Automatic Updates Over Mobile Data

Large app and operating system updates can consume significant amounts of data.

Where possible, configure your device to perform updates only when connected to Wi-Fi.

This is particularly important if your travel eSIM has a limited data allowance.

Download What You Need Before Travelling

One of the easiest ways to reduce mobile data usage is to download important content before leaving home.

Consider downloading:

• Offline maps
• Travel guides
• Hotel booking information
• Boarding passes
• Train tickets
• Music and podcasts
• Entertainment for long journeys

Downloading this information over your normal home Wi-Fi means you don't need to use your international data allowance for it later.

Be Careful With Video Streaming

Video is one of the fastest ways to use mobile data.

Streaming services can consume hundreds of megabytes or several gigabytes depending on the video quality and viewing time.

If you're travelling with a limited data allowance, use hotel or café Wi-Fi for streaming whenever practical.

Downloading content before leaving your accommodation can also help.

How Much Data Do You Need Abroad?

Your data requirements depend on how you use your phone.

• Light usage: Around 1GB–3GB.
• Moderate usage: Around 3GB–10GB.
• Heavy usage: Around 10GB–20GB or more.
• Remote work and hotspot usage: 20GB or more may be appropriate.

Maps, messaging and browsing generally use considerably less data than video streaming or hotspot usage.

For a more detailed guide, see How Much Mobile Data Do You Need When Travelling?.

What About Calls and Text Messages?

Roaming charges don't only apply to mobile data.

Depending on your mobile provider, making or receiving calls and sending traditional SMS messages overseas may incur additional charges.

Internet-based services such as WhatsApp, FaceTime, Messenger and other messaging platforms can provide an alternative when you have mobile data or Wi-Fi.

However, make sure you understand which services your contacts use before relying on them completely.

Using Your Phone Abroad for Banking

Your phone can be particularly important when travelling because banking apps and financial services may use SMS or app-based authentication.

If you're using a travel eSIM, consider keeping your normal SIM available for important verification messages if your device supports dual SIM.

Check your bank's requirements before travelling so you don't discover that you need access to your home number after switching SIMs.

What If Your Phone Is Locked?

An internationally purchased travel eSIM may not work if your phone is locked to your home mobile network.

Before purchasing an eSIM, check whether your device is unlocked and compatible with eSIM technology.

If you're unsure, contact your mobile provider before travelling.

How to Avoid Bill Shock When Travelling

A little preparation can dramatically reduce the risk of unexpected mobile charges.

1. Check your provider's international roaming policy.
2. Check the countries included in your plan.
3. Find out how much roaming data costs.
4. Consider buying a travel eSIM.
5. Install your eSIM before departure if appropriate.
6. Set the correct SIM as your mobile data connection.
7. Disable data roaming on your normal SIM if necessary.
8. Monitor your data usage during the trip.
9. Use Wi-Fi for large downloads and streaming.

What Is the Best Way to Avoid Roaming Charges?

For many travellers, the simplest approach is to use a travel eSIM for mobile data while keeping their normal SIM available for essential calls or messages.

This approach can provide a balance between staying connected and controlling costs.

However, the best option depends on your destination and existing mobile contract.

If your provider already includes international data at no additional cost, there may be little reason to purchase another service.

Travel eSIMs for Multi-Country Trips

If you're travelling through several countries, consider a regional travel eSIM rather than purchasing a separate plan for each destination.

Regional plans can provide coverage across multiple countries using one eSIM, although the exact destinations included vary by plan.

Always check the coverage list before purchasing.

For example, our guides cover Southeast Asia eSIMs and Europe eSIMs in more detail.

Can You Use Your Phone Abroad Without a SIM Card?

You can use your phone over Wi-Fi without a SIM card, but you won't have a mobile data connection when you're away from Wi-Fi.

An eSIM provides another option because it doesn't require a physical SIM card.

This makes it possible for compatible devices to connect to mobile networks without inserting a physical card.

Check Travel eSIM Options

If you're travelling internationally and want to avoid expensive roaming charges, use the VagaPay eSIM widget below to compare available travel eSIM plans for your destination.

Check the countries covered, data allowance and validity period before choosing a plan.

Frequently Asked Questions

How can I use my phone abroad without roaming charges?

You can use a travel eSIM, local SIM card or Wi-Fi instead of relying on your normal mobile provider's international roaming. Make sure your normal SIM isn't using mobile data if you want to avoid roaming charges.

Is an eSIM cheaper than roaming?

It can be, depending on your destination and existing mobile plan. Compare the cost and data allowance of your roaming package with available travel eSIM plans before travelling.

Can I keep my normal SIM while using an eSIM abroad?

Many compatible phones support dual-SIM functionality, allowing you to keep your normal SIM while using an eSIM for mobile data.

Should I turn off data roaming when travelling?

If you are using another SIM or eSIM for mobile data, disabling data roaming on your normal SIM can help prevent it from accidentally using mobile data overseas.

How do I stop my phone from using data abroad?

You can disable data roaming, select the appropriate SIM for mobile data and restrict background data usage. Your phone's exact settings depend on the manufacturer and operating system.

Can I use WhatsApp without roaming?

Yes. WhatsApp uses an internet connection rather than traditional SMS or mobile calling. It can work through Wi-Fi or mobile data provided by a travel eSIM or local SIM.

Will I be charged for receiving texts abroad?

This depends on your mobile provider and destination. Check your provider's international roaming terms before travelling.

Can I use Google Maps abroad without roaming?

Yes. Google Maps can be used over Wi-Fi or a travel eSIM. You can also download maps for offline use before travelling.

How much data should I buy for travelling?

Light users may need 1GB–3GB, moderate users around 3GB–10GB and heavy users 10GB–20GB or more. Remote workers using hotspots may need considerably more.

Can I use a travel eSIM in multiple countries?

Yes, if you choose a regional eSIM that covers all of the countries on your itinerary.

Final Thoughts

Using your phone abroad doesn't have to mean accepting expensive roaming charges.

By checking your existing mobile plan, choosing the right connectivity option and changing a few settings before you travel, you can stay connected while keeping your costs under control.

For many travellers, a travel eSIM provides a convenient alternative to traditional international roaming, particularly when travelling between multiple countries.

However, local SIM cards, roaming packages and Wi-Fi can all have their place depending on your trip.

Before you travel, compare your options and make sure you know exactly how your phone will connect to the internet when you arrive.

Ready to avoid expensive roaming charges? Use the VagaPay eSIM widget below to compare travel eSIM plans for your destination.