eSIM Tips
What is Data Roaming and How Does It Work?
Data roaming means using cellular data on a foreign network while abroad. Learn what it does, when it costs money, and how to avoid unexpected data roaming fees.
When you're outside your home country, your phone may still connect to the internet through a process called data roaming. This allows you to continue using apps, navigation, and mobile data while abroad. But roaming can also come with unexpected charges or reduced control if you don't manage it properly. For people who prefer more predictable costs and easier setup, using a global eSIM can be a practical alternative to traditional roaming. In this guide, you'll learn what data roaming is, how it works, when it costs money, and how to avoid common mistakes.
What is Data Roaming?
Data roaming means using your mobile phone on a foreign network to access the internet when you're outside your home country. It is a mobile feature that allows your device to connect to a partner network abroad when your usual network is not available. This lets you browse the web, check emails, or use maps while abroad without needing a local SIM card.
How Does Data Roaming Work?
Data roaming works by enabling your phone to use another network when your regular mobile service is not available, usually while you're traveling internationally. If data roaming is enabled in your device settings, your phone automatically detects and connects to a partner network in the country you are visiting. Even though you're not using your home network directly, your data usage is still tracked and charged by your original carrier. Apple explains that data roaming permits internet access through a cellular data network when you are in a region not covered by your carrier. [1]
Does Data Roaming Cost Money?
Yes, data roaming usually costs extra money unless it is included in your mobile plan. When you use mobile data on a foreign network, your home provider may apply additional fees known as roaming charges. These costs vary depending on your provider, destination country, and the amount of data you use. In many cases, roaming fees are significantly higher than regular domestic rates. Some carriers offer international plans or daily roaming passes, but if you do not have one, you may be charged per megabyte or per day.
Note: Some regions have different rules. For example, when you travel from one EU country to another, mobile providers are not allowed to apply extra charges for calls, texts, or mobile data. Your usage is charged at the same rate as your domestic plan. [2]
Should Data Roaming Be On or Off?
It depends on your mobile plan and travel needs. If your current mobile plan includes international data or roaming packages, you may choose to keep data roaming turned on while abroad. This allows you to use mobile data even when you're outside your country. However, if your plan does not include roaming or if you're unsure about the potential charges, it's usually safer to turn off data roaming to avoid unexpected costs. You can still access the internet through Wi-Fi connections, and you can enable data roaming manually when needed.
Turning Data Roaming On or Off on iPhone
Open the Settings app.
Tap Cellular or Mobile Data.
Select Cellular Data Options.
Toggle Data Roaming on or off.
You can also read our guides on Current period roaming on iPhone and How to turn on international roaming on iPhone.
Turning Data Roaming On or Off on Android
Open the Settings app.
Tap Network & Internet or Connections.
Select Mobile Network.
Toggle the Data Roaming option.
For more information, you can read our guide on Data Roaming On or Off.
Advantages and Disadvantages of Data Roaming
Data roaming can be helpful when you need mobile internet abroad, but it also has some limitations. Understanding both the advantages and disadvantages can help you decide if it's the right option for your trip. You can find a summary of the main advantages and disadvantages in the table below:
Pros | Cons |
You can use mobile internet without switching SIM cards or buying local plans. | Roaming may lead to high extra charges if not included in your plan. |
You get immediate access to mobile data upon arrival in a new country. | Data speeds may be slower depending on the partner network. |
Some providers offer international packages that reduce roaming costs. | Roaming settings may not work consistently across all networks or countries. |
Your existing phone number remains active for calls and texts while traveling. | Data roaming can increase battery usage due to constant signal searching. |
Table: Key pros and cons of using data roaming
What Are the Alternatives to Data Roaming?
If you prefer not to use data roaming at all, there are several ways to access mobile internet while abroad without relying on your mobile carrier’s international agreements. These alternatives can help you stay online without incurring roaming fees:
eSIM: A digital SIM you can install on your phone to access local or international mobile data without switching physical cards. Many eSIM plans are prepaid and do not charge extra for roaming.
Local SIM card: You can buy a SIM card from a mobile provider in the country you’re visiting. This gives you access to local rates, but it often requires changing your number.
Pocket Wi-Fi: A portable device that creates a Wi-Fi hotspot using a local data connection. It can be useful for multiple devices but may require rental fees and charging.
Public Wi-Fi: Available at hotels, cafes, or airports. This option is free but may be less secure and not always reliable.
For more information, you can read our post on What is eSIM and how does it work.
Note: Not all phones support eSIM or work with foreign SIM cards. Before you travel, check your device’s compatibility and carrier settings to avoid connection issues abroad. For detailed information, you can check out our guide on eSIM Compatible Phones.
How to Avoid Data Roaming Charges?
If your mobile plan does not include international coverage, having data roaming enabled can result in unexpected costs. To avoid these charges, here are some simple steps you can take before and during your trip:
Turn off data roaming: This prevents your phone from connecting to foreign mobile networks and using data without your knowledge.
Use a global eSIM: A global eSIM allows you to access mobile internet in different countries without roaming charges or long-term contracts.
Enable airplane mode and use Wi-Fi: When airplane mode is on, your phone disconnects from cellular networks. You can still connect to Wi-Fi to use the internet.
Download important content before your trip: Save offline versions of maps, translations, and entertainment in advance to reduce the need for mobile data.
Avoiding roaming charges is especially important if your plan charges per MB or does not offer international roaming bundles. For detailed information, you can read our post on How to avoid roaming charges.
How to Monitor and Reduce Mobile Data Usage While Abroad
Once you start using mobile internet abroad, it’s important to track how much data you use and find ways to reduce it. This helps prevent overages, especially if you have a limited data plan. Here are some simple tips to help you manage your mobile data more efficiently:
Check which apps use the most data: In your phone’s settings, you can see detailed usage per app. This helps you decide which apps to limit or close.
Set a data limit or usage alert: Most phones allow you to add a monthly data cap or warning when usage reaches a certain level.
Turn off background app data: This prevents apps from using mobile data when you are not actively using them.
Disable automatic updates and media downloads: To avoid large background data use, keep these features off unless you are connected to Wi-Fi. [3]
Use low data mode: This setting helps reduce how much data your phone and apps use during regular activity.
For more information, you can check out our posts on How to set mobile data limit, Why is my phone using so much data and What is low data mode on iPhone.
Using Roamless eSIM as a Data Roaming Alternative
If you want to avoid traditional data roaming charges but still need reliable mobile internet abroad, a travel eSIM, such as Roamless, can be a simple and effective option. Here are the key benefits of using Roamless eSIM:
Easy activation: You can install and activate the eSIM before your trip, so your data is ready to use as soon as you arrive.
No extra roaming fees: Roamless offers prepaid pricing with no hidden costs, so you can use mobile data internationally without worrying about unexpected charges.
Unlimited hotspot and tethering: You can share your connection with other devices. Where available, speeds can reach up to 5G.
Different plan types: RoamlessFlex (a pay-as-you-go plan, with no expiration) and RoamlessFix (30-day plans for different data needs) let you choose the best fit for your travel.
Additional features: The app includes international calling and a built-in tool to track your data usage in real time.
To get the latest offers and extra data on your first purchase, visit our eSIM promo code page.
Frequently Asked Questions
What is the difference between cellular roaming and international roaming?
- Cellular roaming means your phone connects to a different mobile network when your usual provider is not available. If this happens outside your home country, it’s called international roaming.
What are roaming charges?
- Roaming charges are additional fees your mobile provider may apply when you use your phone on a foreign network. These costs depend on your plan and roaming agreements between carriers.
Is mobile data the same as data roaming?
- No. Mobile data refers to your general internet use on a cellular network. Data roaming means using mobile data while connected to a network outside your home country.
Does data roaming affect internet speed?
- Sometimes. Your speed may vary depending on the roaming partner network's capacity, local coverage, and your mobile plan. In some cases, speeds may be slower than on your home network.
Does data roaming use more battery?
- Yes. When roaming, your phone may consume more battery because it constantly searches for and connects to foreign networks, especially in areas with weak signals.
What happens if I don’t turn off data roaming while abroad?
- If your plan doesn’t include international data, your phone might use mobile data in the background, which could result in unexpected roaming fees.
Can I use mobile internet abroad without turning on data roaming?
- Yes. You can use Wi-Fi or a global eSIM that provides internet access in other countries without enabling roaming on your device.
Can I use messaging apps if data roaming is off?
- Yes. If you're connected to Wi-Fi, you can continue using apps like WhatsApp, Telegram, or iMessage even when data roaming is turned off.
Does using Wi-Fi lead to roaming charges?
- No. When you’re connected to Wi-Fi, you are not using mobile data, so roaming charges do not apply.
Does airplane mode stop roaming?
- Yes. When airplane mode is turned on, all wireless connections, including cellular networks, are disabled, so roaming is also stopped.
Sources
[1] Apple Support. "About cellular data roaming options for your iPhone and iPad." May 14, 2024. - https://support.apple.com/en-us/109037
[2] European Union. "Roaming: what you pay to use your smartphone in another EU country." Your Europe. June 10, 2025. - https://europa.eu/youreurope/citizens/consumers/internet-telecoms/mobile-roaming-costs/
[3] Federal Communications Commission (FCC). "International Roaming: Using Your Mobile Phone in Other Countries." April 21, 2020. - https://www.fcc.gov/sites/default/files/international_roaming_-_using_your_mobile_phone_in_other_countries.pdf
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When you're outside your home country, your phone may still connect to the internet through a process called data roaming. This allows you to continue using apps, navigation, and mobile data while abroad. But roaming can also come with unexpected charges or reduced control if you don't manage it properly. For people who prefer more predictable costs and easier setup, using a global eSIM can be a practical alternative to traditional roaming. In this guide, you'll learn what data roaming is, how it works, when it costs money, and how to avoid common mistakes.
What is Data Roaming?
Data roaming means using your mobile phone on a foreign network to access the internet when you're outside your home country. It is a mobile feature that allows your device to connect to a partner network abroad when your usual network is not available. This lets you browse the web, check emails, or use maps while abroad without needing a local SIM card.
How Does Data Roaming Work?
Data roaming works by enabling your phone to use another network when your regular mobile service is not available, usually while you're traveling internationally. If data roaming is enabled in your device settings, your phone automatically detects and connects to a partner network in the country you are visiting. Even though you're not using your home network directly, your data usage is still tracked and charged by your original carrier. Apple explains that data roaming permits internet access through a cellular data network when you are in a region not covered by your carrier. [1]
Does Data Roaming Cost Money?
Yes, data roaming usually costs extra money unless it is included in your mobile plan. When you use mobile data on a foreign network, your home provider may apply additional fees known as roaming charges. These costs vary depending on your provider, destination country, and the amount of data you use. In many cases, roaming fees are significantly higher than regular domestic rates. Some carriers offer international plans or daily roaming passes, but if you do not have one, you may be charged per megabyte or per day.
Note: Some regions have different rules. For example, when you travel from one EU country to another, mobile providers are not allowed to apply extra charges for calls, texts, or mobile data. Your usage is charged at the same rate as your domestic plan. [2]
Should Data Roaming Be On or Off?
It depends on your mobile plan and travel needs. If your current mobile plan includes international data or roaming packages, you may choose to keep data roaming turned on while abroad. This allows you to use mobile data even when you're outside your country. However, if your plan does not include roaming or if you're unsure about the potential charges, it's usually safer to turn off data roaming to avoid unexpected costs. You can still access the internet through Wi-Fi connections, and you can enable data roaming manually when needed.
Turning Data Roaming On or Off on iPhone
Open the Settings app.
Tap Cellular or Mobile Data.
Select Cellular Data Options.
Toggle Data Roaming on or off.
You can also read our guides on Current period roaming on iPhone and How to turn on international roaming on iPhone.
Turning Data Roaming On or Off on Android
Open the Settings app.
Tap Network & Internet or Connections.
Select Mobile Network.
Toggle the Data Roaming option.
For more information, you can read our guide on Data Roaming On or Off.
Advantages and Disadvantages of Data Roaming
Data roaming can be helpful when you need mobile internet abroad, but it also has some limitations. Understanding both the advantages and disadvantages can help you decide if it's the right option for your trip. You can find a summary of the main advantages and disadvantages in the table below:
Pros | Cons |
You can use mobile internet without switching SIM cards or buying local plans. | Roaming may lead to high extra charges if not included in your plan. |
You get immediate access to mobile data upon arrival in a new country. | Data speeds may be slower depending on the partner network. |
Some providers offer international packages that reduce roaming costs. | Roaming settings may not work consistently across all networks or countries. |
Your existing phone number remains active for calls and texts while traveling. | Data roaming can increase battery usage due to constant signal searching. |
Table: Key pros and cons of using data roaming
What Are the Alternatives to Data Roaming?
If you prefer not to use data roaming at all, there are several ways to access mobile internet while abroad without relying on your mobile carrier’s international agreements. These alternatives can help you stay online without incurring roaming fees:
eSIM: A digital SIM you can install on your phone to access local or international mobile data without switching physical cards. Many eSIM plans are prepaid and do not charge extra for roaming.
Local SIM card: You can buy a SIM card from a mobile provider in the country you’re visiting. This gives you access to local rates, but it often requires changing your number.
Pocket Wi-Fi: A portable device that creates a Wi-Fi hotspot using a local data connection. It can be useful for multiple devices but may require rental fees and charging.
Public Wi-Fi: Available at hotels, cafes, or airports. This option is free but may be less secure and not always reliable.
For more information, you can read our post on What is eSIM and how does it work.
Note: Not all phones support eSIM or work with foreign SIM cards. Before you travel, check your device’s compatibility and carrier settings to avoid connection issues abroad. For detailed information, you can check out our guide on eSIM Compatible Phones.
How to Avoid Data Roaming Charges?
If your mobile plan does not include international coverage, having data roaming enabled can result in unexpected costs. To avoid these charges, here are some simple steps you can take before and during your trip:
Turn off data roaming: This prevents your phone from connecting to foreign mobile networks and using data without your knowledge.
Use a global eSIM: A global eSIM allows you to access mobile internet in different countries without roaming charges or long-term contracts.
Enable airplane mode and use Wi-Fi: When airplane mode is on, your phone disconnects from cellular networks. You can still connect to Wi-Fi to use the internet.
Download important content before your trip: Save offline versions of maps, translations, and entertainment in advance to reduce the need for mobile data.
Avoiding roaming charges is especially important if your plan charges per MB or does not offer international roaming bundles. For detailed information, you can read our post on How to avoid roaming charges.
How to Monitor and Reduce Mobile Data Usage While Abroad
Once you start using mobile internet abroad, it’s important to track how much data you use and find ways to reduce it. This helps prevent overages, especially if you have a limited data plan. Here are some simple tips to help you manage your mobile data more efficiently:
Check which apps use the most data: In your phone’s settings, you can see detailed usage per app. This helps you decide which apps to limit or close.
Set a data limit or usage alert: Most phones allow you to add a monthly data cap or warning when usage reaches a certain level.
Turn off background app data: This prevents apps from using mobile data when you are not actively using them.
Disable automatic updates and media downloads: To avoid large background data use, keep these features off unless you are connected to Wi-Fi. [3]
Use low data mode: This setting helps reduce how much data your phone and apps use during regular activity.
For more information, you can check out our posts on How to set mobile data limit, Why is my phone using so much data and What is low data mode on iPhone.
Using Roamless eSIM as a Data Roaming Alternative
If you want to avoid traditional data roaming charges but still need reliable mobile internet abroad, a travel eSIM, such as Roamless, can be a simple and effective option. Here are the key benefits of using Roamless eSIM:
Easy activation: You can install and activate the eSIM before your trip, so your data is ready to use as soon as you arrive.
No extra roaming fees: Roamless offers prepaid pricing with no hidden costs, so you can use mobile data internationally without worrying about unexpected charges.
Unlimited hotspot and tethering: You can share your connection with other devices. Where available, speeds can reach up to 5G.
Different plan types: RoamlessFlex (a pay-as-you-go plan, with no expiration) and RoamlessFix (30-day plans for different data needs) let you choose the best fit for your travel.
Additional features: The app includes international calling and a built-in tool to track your data usage in real time.
To get the latest offers and extra data on your first purchase, visit our eSIM promo code page.
Frequently Asked Questions
What is the difference between cellular roaming and international roaming?
- Cellular roaming means your phone connects to a different mobile network when your usual provider is not available. If this happens outside your home country, it’s called international roaming.
What are roaming charges?
- Roaming charges are additional fees your mobile provider may apply when you use your phone on a foreign network. These costs depend on your plan and roaming agreements between carriers.
Is mobile data the same as data roaming?
- No. Mobile data refers to your general internet use on a cellular network. Data roaming means using mobile data while connected to a network outside your home country.
Does data roaming affect internet speed?
- Sometimes. Your speed may vary depending on the roaming partner network's capacity, local coverage, and your mobile plan. In some cases, speeds may be slower than on your home network.
Does data roaming use more battery?
- Yes. When roaming, your phone may consume more battery because it constantly searches for and connects to foreign networks, especially in areas with weak signals.
What happens if I don’t turn off data roaming while abroad?
- If your plan doesn’t include international data, your phone might use mobile data in the background, which could result in unexpected roaming fees.
Can I use mobile internet abroad without turning on data roaming?
- Yes. You can use Wi-Fi or a global eSIM that provides internet access in other countries without enabling roaming on your device.
Can I use messaging apps if data roaming is off?
- Yes. If you're connected to Wi-Fi, you can continue using apps like WhatsApp, Telegram, or iMessage even when data roaming is turned off.
Does using Wi-Fi lead to roaming charges?
- No. When you’re connected to Wi-Fi, you are not using mobile data, so roaming charges do not apply.
Does airplane mode stop roaming?
- Yes. When airplane mode is turned on, all wireless connections, including cellular networks, are disabled, so roaming is also stopped.
Sources
[1] Apple Support. "About cellular data roaming options for your iPhone and iPad." May 14, 2024. - https://support.apple.com/en-us/109037
[2] European Union. "Roaming: what you pay to use your smartphone in another EU country." Your Europe. June 10, 2025. - https://europa.eu/youreurope/citizens/consumers/internet-telecoms/mobile-roaming-costs/
[3] Federal Communications Commission (FCC). "International Roaming: Using Your Mobile Phone in Other Countries." April 21, 2020. - https://www.fcc.gov/sites/default/files/international_roaming_-_using_your_mobile_phone_in_other_countries.pdf
When you're outside your home country, your phone may still connect to the internet through a process called data roaming. This allows you to continue using apps, navigation, and mobile data while abroad. But roaming can also come with unexpected charges or reduced control if you don't manage it properly. For people who prefer more predictable costs and easier setup, using a global eSIM can be a practical alternative to traditional roaming. In this guide, you'll learn what data roaming is, how it works, when it costs money, and how to avoid common mistakes.
What is Data Roaming?
Data roaming means using your mobile phone on a foreign network to access the internet when you're outside your home country. It is a mobile feature that allows your device to connect to a partner network abroad when your usual network is not available. This lets you browse the web, check emails, or use maps while abroad without needing a local SIM card.
How Does Data Roaming Work?
Data roaming works by enabling your phone to use another network when your regular mobile service is not available, usually while you're traveling internationally. If data roaming is enabled in your device settings, your phone automatically detects and connects to a partner network in the country you are visiting. Even though you're not using your home network directly, your data usage is still tracked and charged by your original carrier. Apple explains that data roaming permits internet access through a cellular data network when you are in a region not covered by your carrier. [1]
Does Data Roaming Cost Money?
Yes, data roaming usually costs extra money unless it is included in your mobile plan. When you use mobile data on a foreign network, your home provider may apply additional fees known as roaming charges. These costs vary depending on your provider, destination country, and the amount of data you use. In many cases, roaming fees are significantly higher than regular domestic rates. Some carriers offer international plans or daily roaming passes, but if you do not have one, you may be charged per megabyte or per day.
Note: Some regions have different rules. For example, when you travel from one EU country to another, mobile providers are not allowed to apply extra charges for calls, texts, or mobile data. Your usage is charged at the same rate as your domestic plan. [2]
Should Data Roaming Be On or Off?
It depends on your mobile plan and travel needs. If your current mobile plan includes international data or roaming packages, you may choose to keep data roaming turned on while abroad. This allows you to use mobile data even when you're outside your country. However, if your plan does not include roaming or if you're unsure about the potential charges, it's usually safer to turn off data roaming to avoid unexpected costs. You can still access the internet through Wi-Fi connections, and you can enable data roaming manually when needed.
Turning Data Roaming On or Off on iPhone
Open the Settings app.
Tap Cellular or Mobile Data.
Select Cellular Data Options.
Toggle Data Roaming on or off.
You can also read our guides on Current period roaming on iPhone and How to turn on international roaming on iPhone.
Turning Data Roaming On or Off on Android
Open the Settings app.
Tap Network & Internet or Connections.
Select Mobile Network.
Toggle the Data Roaming option.
For more information, you can read our guide on Data Roaming On or Off.
Advantages and Disadvantages of Data Roaming
Data roaming can be helpful when you need mobile internet abroad, but it also has some limitations. Understanding both the advantages and disadvantages can help you decide if it's the right option for your trip. You can find a summary of the main advantages and disadvantages in the table below:
Pros | Cons |
You can use mobile internet without switching SIM cards or buying local plans. | Roaming may lead to high extra charges if not included in your plan. |
You get immediate access to mobile data upon arrival in a new country. | Data speeds may be slower depending on the partner network. |
Some providers offer international packages that reduce roaming costs. | Roaming settings may not work consistently across all networks or countries. |
Your existing phone number remains active for calls and texts while traveling. | Data roaming can increase battery usage due to constant signal searching. |
Table: Key pros and cons of using data roaming
What Are the Alternatives to Data Roaming?
If you prefer not to use data roaming at all, there are several ways to access mobile internet while abroad without relying on your mobile carrier’s international agreements. These alternatives can help you stay online without incurring roaming fees:
eSIM: A digital SIM you can install on your phone to access local or international mobile data without switching physical cards. Many eSIM plans are prepaid and do not charge extra for roaming.
Local SIM card: You can buy a SIM card from a mobile provider in the country you’re visiting. This gives you access to local rates, but it often requires changing your number.
Pocket Wi-Fi: A portable device that creates a Wi-Fi hotspot using a local data connection. It can be useful for multiple devices but may require rental fees and charging.
Public Wi-Fi: Available at hotels, cafes, or airports. This option is free but may be less secure and not always reliable.
For more information, you can read our post on What is eSIM and how does it work.
Note: Not all phones support eSIM or work with foreign SIM cards. Before you travel, check your device’s compatibility and carrier settings to avoid connection issues abroad. For detailed information, you can check out our guide on eSIM Compatible Phones.
How to Avoid Data Roaming Charges?
If your mobile plan does not include international coverage, having data roaming enabled can result in unexpected costs. To avoid these charges, here are some simple steps you can take before and during your trip:
Turn off data roaming: This prevents your phone from connecting to foreign mobile networks and using data without your knowledge.
Use a global eSIM: A global eSIM allows you to access mobile internet in different countries without roaming charges or long-term contracts.
Enable airplane mode and use Wi-Fi: When airplane mode is on, your phone disconnects from cellular networks. You can still connect to Wi-Fi to use the internet.
Download important content before your trip: Save offline versions of maps, translations, and entertainment in advance to reduce the need for mobile data.
Avoiding roaming charges is especially important if your plan charges per MB or does not offer international roaming bundles. For detailed information, you can read our post on How to avoid roaming charges.
How to Monitor and Reduce Mobile Data Usage While Abroad
Once you start using mobile internet abroad, it’s important to track how much data you use and find ways to reduce it. This helps prevent overages, especially if you have a limited data plan. Here are some simple tips to help you manage your mobile data more efficiently:
Check which apps use the most data: In your phone’s settings, you can see detailed usage per app. This helps you decide which apps to limit or close.
Set a data limit or usage alert: Most phones allow you to add a monthly data cap or warning when usage reaches a certain level.
Turn off background app data: This prevents apps from using mobile data when you are not actively using them.
Disable automatic updates and media downloads: To avoid large background data use, keep these features off unless you are connected to Wi-Fi. [3]
Use low data mode: This setting helps reduce how much data your phone and apps use during regular activity.
For more information, you can check out our posts on How to set mobile data limit, Why is my phone using so much data and What is low data mode on iPhone.
Using Roamless eSIM as a Data Roaming Alternative
If you want to avoid traditional data roaming charges but still need reliable mobile internet abroad, a travel eSIM, such as Roamless, can be a simple and effective option. Here are the key benefits of using Roamless eSIM:
Easy activation: You can install and activate the eSIM before your trip, so your data is ready to use as soon as you arrive.
No extra roaming fees: Roamless offers prepaid pricing with no hidden costs, so you can use mobile data internationally without worrying about unexpected charges.
Unlimited hotspot and tethering: You can share your connection with other devices. Where available, speeds can reach up to 5G.
Different plan types: RoamlessFlex (a pay-as-you-go plan, with no expiration) and RoamlessFix (30-day plans for different data needs) let you choose the best fit for your travel.
Additional features: The app includes international calling and a built-in tool to track your data usage in real time.
To get the latest offers and extra data on your first purchase, visit our eSIM promo code page.
Frequently Asked Questions
What is the difference between cellular roaming and international roaming?
- Cellular roaming means your phone connects to a different mobile network when your usual provider is not available. If this happens outside your home country, it’s called international roaming.
What are roaming charges?
- Roaming charges are additional fees your mobile provider may apply when you use your phone on a foreign network. These costs depend on your plan and roaming agreements between carriers.
Is mobile data the same as data roaming?
- No. Mobile data refers to your general internet use on a cellular network. Data roaming means using mobile data while connected to a network outside your home country.
Does data roaming affect internet speed?
- Sometimes. Your speed may vary depending on the roaming partner network's capacity, local coverage, and your mobile plan. In some cases, speeds may be slower than on your home network.
Does data roaming use more battery?
- Yes. When roaming, your phone may consume more battery because it constantly searches for and connects to foreign networks, especially in areas with weak signals.
What happens if I don’t turn off data roaming while abroad?
- If your plan doesn’t include international data, your phone might use mobile data in the background, which could result in unexpected roaming fees.
Can I use mobile internet abroad without turning on data roaming?
- Yes. You can use Wi-Fi or a global eSIM that provides internet access in other countries without enabling roaming on your device.
Can I use messaging apps if data roaming is off?
- Yes. If you're connected to Wi-Fi, you can continue using apps like WhatsApp, Telegram, or iMessage even when data roaming is turned off.
Does using Wi-Fi lead to roaming charges?
- No. When you’re connected to Wi-Fi, you are not using mobile data, so roaming charges do not apply.
Does airplane mode stop roaming?
- Yes. When airplane mode is turned on, all wireless connections, including cellular networks, are disabled, so roaming is also stopped.
Sources
[1] Apple Support. "About cellular data roaming options for your iPhone and iPad." May 14, 2024. - https://support.apple.com/en-us/109037
[2] European Union. "Roaming: what you pay to use your smartphone in another EU country." Your Europe. June 10, 2025. - https://europa.eu/youreurope/citizens/consumers/internet-telecoms/mobile-roaming-costs/
[3] Federal Communications Commission (FCC). "International Roaming: Using Your Mobile Phone in Other Countries." April 21, 2020. - https://www.fcc.gov/sites/default/files/international_roaming_-_using_your_mobile_phone_in_other_countries.pdf
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When you're outside your home country, your phone may still connect to the internet through a process called data roaming. This allows you to continue using apps, navigation, and mobile data while abroad. But roaming can also come with unexpected charges or reduced control if you don't manage it properly. For people who prefer more predictable costs and easier setup, using a global eSIM can be a practical alternative to traditional roaming. In this guide, you'll learn what data roaming is, how it works, when it costs money, and how to avoid common mistakes.
What is Data Roaming?
Data roaming means using your mobile phone on a foreign network to access the internet when you're outside your home country. It is a mobile feature that allows your device to connect to a partner network abroad when your usual network is not available. This lets you browse the web, check emails, or use maps while abroad without needing a local SIM card.
How Does Data Roaming Work?
Data roaming works by enabling your phone to use another network when your regular mobile service is not available, usually while you're traveling internationally. If data roaming is enabled in your device settings, your phone automatically detects and connects to a partner network in the country you are visiting. Even though you're not using your home network directly, your data usage is still tracked and charged by your original carrier. Apple explains that data roaming permits internet access through a cellular data network when you are in a region not covered by your carrier. [1]
Does Data Roaming Cost Money?
Yes, data roaming usually costs extra money unless it is included in your mobile plan. When you use mobile data on a foreign network, your home provider may apply additional fees known as roaming charges. These costs vary depending on your provider, destination country, and the amount of data you use. In many cases, roaming fees are significantly higher than regular domestic rates. Some carriers offer international plans or daily roaming passes, but if you do not have one, you may be charged per megabyte or per day.
Note: Some regions have different rules. For example, when you travel from one EU country to another, mobile providers are not allowed to apply extra charges for calls, texts, or mobile data. Your usage is charged at the same rate as your domestic plan. [2]
Should Data Roaming Be On or Off?
It depends on your mobile plan and travel needs. If your current mobile plan includes international data or roaming packages, you may choose to keep data roaming turned on while abroad. This allows you to use mobile data even when you're outside your country. However, if your plan does not include roaming or if you're unsure about the potential charges, it's usually safer to turn off data roaming to avoid unexpected costs. You can still access the internet through Wi-Fi connections, and you can enable data roaming manually when needed.
Turning Data Roaming On or Off on iPhone
Open the Settings app.
Tap Cellular or Mobile Data.
Select Cellular Data Options.
Toggle Data Roaming on or off.
You can also read our guides on Current period roaming on iPhone and How to turn on international roaming on iPhone.
Turning Data Roaming On or Off on Android
Open the Settings app.
Tap Network & Internet or Connections.
Select Mobile Network.
Toggle the Data Roaming option.
For more information, you can read our guide on Data Roaming On or Off.
Advantages and Disadvantages of Data Roaming
Data roaming can be helpful when you need mobile internet abroad, but it also has some limitations. Understanding both the advantages and disadvantages can help you decide if it's the right option for your trip. You can find a summary of the main advantages and disadvantages in the table below:
Pros | Cons |
You can use mobile internet without switching SIM cards or buying local plans. | Roaming may lead to high extra charges if not included in your plan. |
You get immediate access to mobile data upon arrival in a new country. | Data speeds may be slower depending on the partner network. |
Some providers offer international packages that reduce roaming costs. | Roaming settings may not work consistently across all networks or countries. |
Your existing phone number remains active for calls and texts while traveling. | Data roaming can increase battery usage due to constant signal searching. |
Table: Key pros and cons of using data roaming
What Are the Alternatives to Data Roaming?
If you prefer not to use data roaming at all, there are several ways to access mobile internet while abroad without relying on your mobile carrier’s international agreements. These alternatives can help you stay online without incurring roaming fees:
eSIM: A digital SIM you can install on your phone to access local or international mobile data without switching physical cards. Many eSIM plans are prepaid and do not charge extra for roaming.
Local SIM card: You can buy a SIM card from a mobile provider in the country you’re visiting. This gives you access to local rates, but it often requires changing your number.
Pocket Wi-Fi: A portable device that creates a Wi-Fi hotspot using a local data connection. It can be useful for multiple devices but may require rental fees and charging.
Public Wi-Fi: Available at hotels, cafes, or airports. This option is free but may be less secure and not always reliable.
For more information, you can read our post on What is eSIM and how does it work.
Note: Not all phones support eSIM or work with foreign SIM cards. Before you travel, check your device’s compatibility and carrier settings to avoid connection issues abroad. For detailed information, you can check out our guide on eSIM Compatible Phones.
How to Avoid Data Roaming Charges?
If your mobile plan does not include international coverage, having data roaming enabled can result in unexpected costs. To avoid these charges, here are some simple steps you can take before and during your trip:
Turn off data roaming: This prevents your phone from connecting to foreign mobile networks and using data without your knowledge.
Use a global eSIM: A global eSIM allows you to access mobile internet in different countries without roaming charges or long-term contracts.
Enable airplane mode and use Wi-Fi: When airplane mode is on, your phone disconnects from cellular networks. You can still connect to Wi-Fi to use the internet.
Download important content before your trip: Save offline versions of maps, translations, and entertainment in advance to reduce the need for mobile data.
Avoiding roaming charges is especially important if your plan charges per MB or does not offer international roaming bundles. For detailed information, you can read our post on How to avoid roaming charges.
How to Monitor and Reduce Mobile Data Usage While Abroad
Once you start using mobile internet abroad, it’s important to track how much data you use and find ways to reduce it. This helps prevent overages, especially if you have a limited data plan. Here are some simple tips to help you manage your mobile data more efficiently:
Check which apps use the most data: In your phone’s settings, you can see detailed usage per app. This helps you decide which apps to limit or close.
Set a data limit or usage alert: Most phones allow you to add a monthly data cap or warning when usage reaches a certain level.
Turn off background app data: This prevents apps from using mobile data when you are not actively using them.
Disable automatic updates and media downloads: To avoid large background data use, keep these features off unless you are connected to Wi-Fi. [3]
Use low data mode: This setting helps reduce how much data your phone and apps use during regular activity.
For more information, you can check out our posts on How to set mobile data limit, Why is my phone using so much data and What is low data mode on iPhone.
Using Roamless eSIM as a Data Roaming Alternative
If you want to avoid traditional data roaming charges but still need reliable mobile internet abroad, a travel eSIM, such as Roamless, can be a simple and effective option. Here are the key benefits of using Roamless eSIM:
Easy activation: You can install and activate the eSIM before your trip, so your data is ready to use as soon as you arrive.
No extra roaming fees: Roamless offers prepaid pricing with no hidden costs, so you can use mobile data internationally without worrying about unexpected charges.
Unlimited hotspot and tethering: You can share your connection with other devices. Where available, speeds can reach up to 5G.
Different plan types: RoamlessFlex (a pay-as-you-go plan, with no expiration) and RoamlessFix (30-day plans for different data needs) let you choose the best fit for your travel.
Additional features: The app includes international calling and a built-in tool to track your data usage in real time.
To get the latest offers and extra data on your first purchase, visit our eSIM promo code page.
Frequently Asked Questions
What is the difference between cellular roaming and international roaming?
- Cellular roaming means your phone connects to a different mobile network when your usual provider is not available. If this happens outside your home country, it’s called international roaming.
What are roaming charges?
- Roaming charges are additional fees your mobile provider may apply when you use your phone on a foreign network. These costs depend on your plan and roaming agreements between carriers.
Is mobile data the same as data roaming?
- No. Mobile data refers to your general internet use on a cellular network. Data roaming means using mobile data while connected to a network outside your home country.
Does data roaming affect internet speed?
- Sometimes. Your speed may vary depending on the roaming partner network's capacity, local coverage, and your mobile plan. In some cases, speeds may be slower than on your home network.
Does data roaming use more battery?
- Yes. When roaming, your phone may consume more battery because it constantly searches for and connects to foreign networks, especially in areas with weak signals.
What happens if I don’t turn off data roaming while abroad?
- If your plan doesn’t include international data, your phone might use mobile data in the background, which could result in unexpected roaming fees.
Can I use mobile internet abroad without turning on data roaming?
- Yes. You can use Wi-Fi or a global eSIM that provides internet access in other countries without enabling roaming on your device.
Can I use messaging apps if data roaming is off?
- Yes. If you're connected to Wi-Fi, you can continue using apps like WhatsApp, Telegram, or iMessage even when data roaming is turned off.
Does using Wi-Fi lead to roaming charges?
- No. When you’re connected to Wi-Fi, you are not using mobile data, so roaming charges do not apply.
Does airplane mode stop roaming?
- Yes. When airplane mode is turned on, all wireless connections, including cellular networks, are disabled, so roaming is also stopped.
Sources
[1] Apple Support. "About cellular data roaming options for your iPhone and iPad." May 14, 2024. - https://support.apple.com/en-us/109037
[2] European Union. "Roaming: what you pay to use your smartphone in another EU country." Your Europe. June 10, 2025. - https://europa.eu/youreurope/citizens/consumers/internet-telecoms/mobile-roaming-costs/
[3] Federal Communications Commission (FCC). "International Roaming: Using Your Mobile Phone in Other Countries." April 21, 2020. - https://www.fcc.gov/sites/default/files/international_roaming_-_using_your_mobile_phone_in_other_countries.pdf
When you're outside your home country, your phone may still connect to the internet through a process called data roaming. This allows you to continue using apps, navigation, and mobile data while abroad. But roaming can also come with unexpected charges or reduced control if you don't manage it properly. For people who prefer more predictable costs and easier setup, using a global eSIM can be a practical alternative to traditional roaming. In this guide, you'll learn what data roaming is, how it works, when it costs money, and how to avoid common mistakes.
What is Data Roaming?
Data roaming means using your mobile phone on a foreign network to access the internet when you're outside your home country. It is a mobile feature that allows your device to connect to a partner network abroad when your usual network is not available. This lets you browse the web, check emails, or use maps while abroad without needing a local SIM card.
How Does Data Roaming Work?
Data roaming works by enabling your phone to use another network when your regular mobile service is not available, usually while you're traveling internationally. If data roaming is enabled in your device settings, your phone automatically detects and connects to a partner network in the country you are visiting. Even though you're not using your home network directly, your data usage is still tracked and charged by your original carrier. Apple explains that data roaming permits internet access through a cellular data network when you are in a region not covered by your carrier. [1]
Does Data Roaming Cost Money?
Yes, data roaming usually costs extra money unless it is included in your mobile plan. When you use mobile data on a foreign network, your home provider may apply additional fees known as roaming charges. These costs vary depending on your provider, destination country, and the amount of data you use. In many cases, roaming fees are significantly higher than regular domestic rates. Some carriers offer international plans or daily roaming passes, but if you do not have one, you may be charged per megabyte or per day.
Note: Some regions have different rules. For example, when you travel from one EU country to another, mobile providers are not allowed to apply extra charges for calls, texts, or mobile data. Your usage is charged at the same rate as your domestic plan. [2]
Should Data Roaming Be On or Off?
It depends on your mobile plan and travel needs. If your current mobile plan includes international data or roaming packages, you may choose to keep data roaming turned on while abroad. This allows you to use mobile data even when you're outside your country. However, if your plan does not include roaming or if you're unsure about the potential charges, it's usually safer to turn off data roaming to avoid unexpected costs. You can still access the internet through Wi-Fi connections, and you can enable data roaming manually when needed.
Turning Data Roaming On or Off on iPhone
Open the Settings app.
Tap Cellular or Mobile Data.
Select Cellular Data Options.
Toggle Data Roaming on or off.
You can also read our guides on Current period roaming on iPhone and How to turn on international roaming on iPhone.
Turning Data Roaming On or Off on Android
Open the Settings app.
Tap Network & Internet or Connections.
Select Mobile Network.
Toggle the Data Roaming option.
For more information, you can read our guide on Data Roaming On or Off.
Advantages and Disadvantages of Data Roaming
Data roaming can be helpful when you need mobile internet abroad, but it also has some limitations. Understanding both the advantages and disadvantages can help you decide if it's the right option for your trip. You can find a summary of the main advantages and disadvantages in the table below:
Pros | Cons |
You can use mobile internet without switching SIM cards or buying local plans. | Roaming may lead to high extra charges if not included in your plan. |
You get immediate access to mobile data upon arrival in a new country. | Data speeds may be slower depending on the partner network. |
Some providers offer international packages that reduce roaming costs. | Roaming settings may not work consistently across all networks or countries. |
Your existing phone number remains active for calls and texts while traveling. | Data roaming can increase battery usage due to constant signal searching. |
Table: Key pros and cons of using data roaming
What Are the Alternatives to Data Roaming?
If you prefer not to use data roaming at all, there are several ways to access mobile internet while abroad without relying on your mobile carrier’s international agreements. These alternatives can help you stay online without incurring roaming fees:
eSIM: A digital SIM you can install on your phone to access local or international mobile data without switching physical cards. Many eSIM plans are prepaid and do not charge extra for roaming.
Local SIM card: You can buy a SIM card from a mobile provider in the country you’re visiting. This gives you access to local rates, but it often requires changing your number.
Pocket Wi-Fi: A portable device that creates a Wi-Fi hotspot using a local data connection. It can be useful for multiple devices but may require rental fees and charging.
Public Wi-Fi: Available at hotels, cafes, or airports. This option is free but may be less secure and not always reliable.
For more information, you can read our post on What is eSIM and how does it work.
Note: Not all phones support eSIM or work with foreign SIM cards. Before you travel, check your device’s compatibility and carrier settings to avoid connection issues abroad. For detailed information, you can check out our guide on eSIM Compatible Phones.
How to Avoid Data Roaming Charges?
If your mobile plan does not include international coverage, having data roaming enabled can result in unexpected costs. To avoid these charges, here are some simple steps you can take before and during your trip:
Turn off data roaming: This prevents your phone from connecting to foreign mobile networks and using data without your knowledge.
Use a global eSIM: A global eSIM allows you to access mobile internet in different countries without roaming charges or long-term contracts.
Enable airplane mode and use Wi-Fi: When airplane mode is on, your phone disconnects from cellular networks. You can still connect to Wi-Fi to use the internet.
Download important content before your trip: Save offline versions of maps, translations, and entertainment in advance to reduce the need for mobile data.
Avoiding roaming charges is especially important if your plan charges per MB or does not offer international roaming bundles. For detailed information, you can read our post on How to avoid roaming charges.
How to Monitor and Reduce Mobile Data Usage While Abroad
Once you start using mobile internet abroad, it’s important to track how much data you use and find ways to reduce it. This helps prevent overages, especially if you have a limited data plan. Here are some simple tips to help you manage your mobile data more efficiently:
Check which apps use the most data: In your phone’s settings, you can see detailed usage per app. This helps you decide which apps to limit or close.
Set a data limit or usage alert: Most phones allow you to add a monthly data cap or warning when usage reaches a certain level.
Turn off background app data: This prevents apps from using mobile data when you are not actively using them.
Disable automatic updates and media downloads: To avoid large background data use, keep these features off unless you are connected to Wi-Fi. [3]
Use low data mode: This setting helps reduce how much data your phone and apps use during regular activity.
For more information, you can check out our posts on How to set mobile data limit, Why is my phone using so much data and What is low data mode on iPhone.
Using Roamless eSIM as a Data Roaming Alternative
If you want to avoid traditional data roaming charges but still need reliable mobile internet abroad, a travel eSIM, such as Roamless, can be a simple and effective option. Here are the key benefits of using Roamless eSIM:
Easy activation: You can install and activate the eSIM before your trip, so your data is ready to use as soon as you arrive.
No extra roaming fees: Roamless offers prepaid pricing with no hidden costs, so you can use mobile data internationally without worrying about unexpected charges.
Unlimited hotspot and tethering: You can share your connection with other devices. Where available, speeds can reach up to 5G.
Different plan types: RoamlessFlex (a pay-as-you-go plan, with no expiration) and RoamlessFix (30-day plans for different data needs) let you choose the best fit for your travel.
Additional features: The app includes international calling and a built-in tool to track your data usage in real time.
To get the latest offers and extra data on your first purchase, visit our eSIM promo code page.
Frequently Asked Questions
What is the difference between cellular roaming and international roaming?
- Cellular roaming means your phone connects to a different mobile network when your usual provider is not available. If this happens outside your home country, it’s called international roaming.
What are roaming charges?
- Roaming charges are additional fees your mobile provider may apply when you use your phone on a foreign network. These costs depend on your plan and roaming agreements between carriers.
Is mobile data the same as data roaming?
- No. Mobile data refers to your general internet use on a cellular network. Data roaming means using mobile data while connected to a network outside your home country.
Does data roaming affect internet speed?
- Sometimes. Your speed may vary depending on the roaming partner network's capacity, local coverage, and your mobile plan. In some cases, speeds may be slower than on your home network.
Does data roaming use more battery?
- Yes. When roaming, your phone may consume more battery because it constantly searches for and connects to foreign networks, especially in areas with weak signals.
What happens if I don’t turn off data roaming while abroad?
- If your plan doesn’t include international data, your phone might use mobile data in the background, which could result in unexpected roaming fees.
Can I use mobile internet abroad without turning on data roaming?
- Yes. You can use Wi-Fi or a global eSIM that provides internet access in other countries without enabling roaming on your device.
Can I use messaging apps if data roaming is off?
- Yes. If you're connected to Wi-Fi, you can continue using apps like WhatsApp, Telegram, or iMessage even when data roaming is turned off.
Does using Wi-Fi lead to roaming charges?
- No. When you’re connected to Wi-Fi, you are not using mobile data, so roaming charges do not apply.
Does airplane mode stop roaming?
- Yes. When airplane mode is turned on, all wireless connections, including cellular networks, are disabled, so roaming is also stopped.
Sources
[1] Apple Support. "About cellular data roaming options for your iPhone and iPad." May 14, 2024. - https://support.apple.com/en-us/109037
[2] European Union. "Roaming: what you pay to use your smartphone in another EU country." Your Europe. June 10, 2025. - https://europa.eu/youreurope/citizens/consumers/internet-telecoms/mobile-roaming-costs/
[3] Federal Communications Commission (FCC). "International Roaming: Using Your Mobile Phone in Other Countries." April 21, 2020. - https://www.fcc.gov/sites/default/files/international_roaming_-_using_your_mobile_phone_in_other_countries.pdf
eSIM Tips
What is Data Roaming and How Does It Work?
Data roaming means using cellular data on a foreign network while abroad. Learn what it does, when it costs money, and how to avoid unexpected data roaming fees.
Data roaming means using cellular data on a foreign network while abroad. Learn what it does, when it costs money, and how to avoid unexpected data roaming fees.