Quick answer
Should data roaming be on for my eSIM?
For many travel eSIMs, yes — data roaming may need to be on for the travel eSIM line so it can connect through partner networks in your destination. This is different from turning on roaming for your home SIM. If you want to avoid home-carrier roaming charges, keep data roaming off for your home SIM and choose the travel eSIM as your mobile data line.
Always follow the instructions shown in your eSIMbundle order. Some plans may require travel eSIM data roaming, while others may not.
Roaming snapshot
- Travel eSIMRoaming on if required
- Home SIMRoaming off to avoid charges
- Data lineTravel eSIM selected
What to avoid
- Turning on home SIM roaming by mistake
- Deleting a one-time eSIM profile
- Guessing APN settings
The simple rule: travel eSIM vs home SIM
Two SIM lines, two different roaming settings. Understand which line does what before changing any toggle.
- Travel eSIM = used for mobile data abroad.
- Home SIM = your normal number for calls, SMS, and verification codes if needed.
- Travel eSIM roaming may need to be on.
- Home SIM roaming should stay off if avoiding home-carrier roaming charges.
Turn roaming on only for the line that is supposed to use travel data.
Two lines, two roles
Home SIM vs Travel eSIM
Home SIM
- Calls / SMS
- Verification codes
- Data roaming: Off
Travel eSIM
- Mobile data abroad
- Data roaming: On if required
- Selected for data
Why travel eSIMs may need data roaming
Travel eSIMs often work through roaming agreements with local networks. That does not mean the same thing as expensive home-carrier roaming.
Your eSIMbundle plan is prepaid. The important thing is choosing the travel eSIM for mobile data and following the plan instructions for roaming.
What happens if data roaming is off?
If your travel eSIM needs roaming and the toggle is off, mobile data can silently fail. Common symptoms include:
- eSIM is installed but no internet.
- Phone shows signal but apps do not load.
- Phone connects to a network but data does not pass.
- Maps, browser, or messages do not work.
- Data works only after roaming is enabled for the travel eSIM.
This is one possible cause, not the only cause. Also check the mobile data line, mobile data toggle, signal, and airplane mode.
How to check data roaming on iPhone
Open Settings → Mobile Service / Cellular / Mobile Data. Tap the travel eSIM or travel mobile plan. Check Data Roaming. Turn it on only if your plan instructions require it.
- Open Settings → Mobile Service, Cellular, or Mobile Data.
- Tap the travel eSIM or travel mobile plan.
- Scroll to Data Roaming.
- Turn Data Roaming on only if your plan instructions require it.
- Return to the previous screen and confirm the travel eSIM is selected for mobile data.
iPhone · Data Roaming
Settings → Mobile Service / Cellular / Mobile Data → Travel eSIM
Travel eSIM
Turn On This Line
Data Roaming
On if required by your plan
Network Selection
Automatic
On iPhone, check Data Roaming inside the travel eSIM line settings.
Some iPhones show Mobile Service, while others show Cellular or Mobile Data. Keep home SIM data roaming off if avoiding home-carrier roaming charges.
How to check data roaming on Android
Open your SIM, mobile network, or SIM manager settings. Tap the travel eSIM or travel mobile plan. Look for Data roaming. Turn it on only if your plan instructions require it.
Android · Roaming
Selected SIM / Mobile network → Roaming (labels vary by brand)
Travel eSIM
Mobile data
Roaming
On if required by your plan
Network
Automatically select network
On Android, Roaming is usually inside the selected SIM or mobile network settings, but labels vary by brand.
Android labels vary by brand, Android version, region, and carrier. The next two sections show the clearest paths for Samsung Galaxy and Google Pixel.
Samsung Galaxy roaming path
Samsung uses SIM card manager to add or manage eSIM plans, but Samsung's official data roaming toggle path is under Mobile Networks.
Settings → Connections → Mobile Networks → Data Roaming
Samsung · Mobile Networks
Settings → Connections → Mobile Networks → Data Roaming
Mobile Networks
Mobile data
Data Roaming
On if required by your plan
Samsung's official data roaming path is Settings → Connections → Mobile Networks → Data Roaming.
Samsung says if the Data Roaming switch is greyed out, check that Mobile data is turned on under Settings → Connections → Data usage → Mobile data.
Source: Samsung UK Support
Google Pixel roaming path
On Pixel, the roaming setting is usually inside the selected SIM or eSIM profile.
Settings → Network & internet → SIMs → travel eSIM → Roaming
Pixel wording can vary by Android version and carrier, but the roaming setting is usually under the selected SIM or eSIM profile.
How to avoid home-carrier roaming charges
Home SIM roaming is controlled by your home carrier. If you leave it on abroad, they can bill you at their international rates. To avoid that while still using a travel eSIM:
- Select the travel eSIM as the mobile data line.
- Keep home SIM data roaming off.
- Use the home SIM only for calls or SMS if you need to be reachable on your normal number.
- Understand that calls or SMS from the home SIM may still be charged by the home carrier.
- Use messaging apps over data (WhatsApp, iMessage over data, etc.) where appropriate.
Charging rules vary by home carrier. This guide is general — check your home-carrier plan for exact roaming behavior.
Does data roaming mean extra eSIMbundle charges?
With a prepaid travel eSIM, your plan includes the data allowance, destination, validity, and usage rules shown during checkout and in your order. Turning on data roaming for the travel eSIM does not turn your eSIMbundle plan into your home carrier's roaming plan.
Home SIM roaming is different. Your home carrier controls home SIM roaming charges.
When roaming is on but data still does not work
Roaming is only one setting. If mobile data still does not work, walk this checklist before contacting support.
- Confirm the travel eSIM is installed.
- Confirm the travel eSIM is turned on.
- Confirm the travel eSIM is selected for mobile data.
- Confirm mobile data is on.
- Confirm the plan is valid for your current destination.
- Toggle airplane mode for 20–30 seconds.
- Restart the phone.
- Move to a place with better signal.
- Check APN only if your order provides APN instructions.
- Check if the included VPN is interfering with a specific app after mobile data works.
- Contact support if data still does not work.
Still not working
Confirm each of these before contacting support
Travel eSIM selected for data
Mobile data line = travel eSIM
Mobile data on
System mobile data toggle enabled
Roaming checked
On for travel eSIM only if required
Signal available
Bars or 4G / 5G indicator visible
Airplane mode toggled
20–30 seconds off, then on
Phone restarted
Full power cycle to re-register
APN only if provided
Do not guess APN values
What not to do
- Do not turn on home SIM roaming unless you understand the charges.
- Do not delete the eSIM while troubleshooting.
- Do not repeatedly scan the QR code — some eSIM profiles can only be installed once.
- Do not guess APN settings.
- Do not assume the included VPN turns on automatically.
- Do not assume roaming means the same thing for home SIM and travel eSIM.
Official sources
Frequently asked questions
Should data roaming be on for my eSIM?
For many travel eSIMs, yes — data roaming may need to be on for the travel eSIM line so it can connect through partner networks in your destination. Always follow the instructions shown in your eSIMbundle order. This is a separate setting from home SIM roaming.
Should data roaming be on for my home SIM?
Not unless you understand the charges from your home carrier. If you want to avoid home-carrier roaming charges, keep home SIM data roaming off and use the travel eSIM as your mobile data line.
Why does a travel eSIM need roaming?
Travel eSIMs often work through roaming agreements with local networks. Turning on data roaming for the travel eSIM allows the phone to use those partner networks in your destination.
Will data roaming on my travel eSIM cause home-carrier charges?
Normally no, as long as the travel eSIM is selected for mobile data and home SIM data roaming stays off. Data roaming is controlled per SIM line on modern dual-SIM phones. Turning data roaming on for the travel eSIM does not automatically turn roaming on for your home SIM. Home-carrier roaming charges come from your home SIM and are controlled by your home carrier.
How do I turn on data roaming for eSIM on iPhone?
Open Settings → Mobile Service, Cellular, or Mobile Data. Tap the travel eSIM. Scroll to Data Roaming. Turn Data Roaming on only if your plan instructions require it. Keep home SIM data roaming off if avoiding home-carrier charges.
How do I turn on data roaming for eSIM on Android?
Open your SIM, mobile network, or SIM manager settings. Tap the travel eSIM or travel mobile plan. Look for Data roaming. Turn it on only if your plan instructions require it. Labels vary by brand.
Where is data roaming on Samsung Galaxy?
On Samsung Galaxy, the official data roaming path is Settings → Connections → Mobile Networks → Data Roaming. If the switch is greyed out, check that Mobile data is turned on under Settings → Connections → Data usage → Mobile data.
Why is data still not working after turning roaming on?
Roaming is only one setting. Confirm the travel eSIM is installed and turned on, is selected as the mobile data line, mobile data is on, the plan is valid for your destination, and there is signal. Toggle airplane mode, restart the phone, and only edit APN if your order provides APN instructions.
Should I change APN settings?
Most travelers do not need to. Only change APN settings if your order provides exact APN instructions. Do not guess APN values or copy them from random websites.
Does the included VPN affect data roaming?
No. The included VPN does not control whether the travel eSIM connects to mobile data or roaming. First make sure the travel eSIM data connection works. Then turn on the included VPN in the app when you want privacy, security, and unrestricted internet abroad.
