Quick answer
When you arrive, choose the travel eSIM for mobile data, keep your home SIM roaming off if you want to avoid home-carrier roaming charges, and check whether data roaming is required for the travel eSIM. If the phone shows No Service, fix network registration first. If there are bars but apps do not load, troubleshoot mobile data, roaming, and APN settings.
Arrival checklist
Work through these checks in order. Each item is quick, and together they cover the most common reasons travel data does not work at arrival.
- Travel eSIM is installed on the phone.
- Travel eSIM line is turned on.
- Travel eSIM is selected for mobile data.
- Home SIM data roaming is off if you want to avoid home-carrier charges.
- Travel eSIM data roaming follows your plan instructions.
- Airplane mode is off.
- The phone has had a few minutes to register on the destination network.
- You know what to check if No Service appears.
- You know what to check if signal appears but data does not work.
- You do not delete the eSIM while troubleshooting.
iPhone arrival checks
Settings → Mobile Service / Cellular / Mobile Data
- Open Settings, then Mobile Service, Cellular, or Mobile Data (label depends on iOS version and region).
- Tap Cellular Data / Mobile Data and choose the travel eSIM line.
- Tap the travel eSIM line and confirm Turn On This Line is enabled.
- Check Data Roaming for the travel eSIM according to your plan instructions.
- Open the home SIM line and keep Data Roaming off if you want to avoid home-carrier charges.
Home SIM
Calls · SMS
Data roaming: off
Selected for data
Travel eSIM · Data
Line: on
Android arrival checks
Settings → Network & internet / Connections / SIM manager
- Open Settings, then Network & internet, Connections, or SIM manager (label varies by Samsung Galaxy, Pixel, Android version, region, and carrier).
- Open the SIM / eSIM manager and choose the travel eSIM for mobile data.
- Confirm Use SIM / eSIM is enabled for the travel eSIM line.
- Check roaming for the travel eSIM according to your plan instructions.
- Keep home SIM data roaming off if you want to avoid home-carrier charges.
Home SIM
Calls · SMS
Data roaming: off
Selected for data
Travel eSIM · Mobile data
Line: on
Home SIM vs travel eSIM
Dual SIM lets both lines stay active at the same time, but only one line is used for mobile data. Set the travel eSIM as the data line so mobile data uses the travel plan, and keep your home SIM available only if you still need it for calls or SMS.
Home SIM
- May stay available for calls and SMS if you still need them.
- Data roaming should stay off if you want to avoid home-carrier charges.
- Should not be selected for mobile data while you use the travel eSIM.
Travel eSIM
- Selected as the mobile data line for the trip.
- Data roaming follows the plan instructions from your order.
- Handles maps, messaging apps, browsing, rideshare, and other travel apps.
Roaming: travel eSIM vs home SIM
Travel eSIM roaming and home SIM roaming are separate settings. Some travel eSIMs need roaming turned on for the travel eSIM line to work on partner networks. Your home SIM roaming should stay off if you want to avoid home-carrier charges.
- Travel eSIM roaming: follow the instructions in your order or plan email.
- Home SIM roaming: keep off if you want to avoid home-carrier roaming charges.
- Turning on home SIM roaming does not fix travel eSIM problems.
If you see No Service
No Service means the travel eSIM line has not registered on a mobile network at your destination. Fix network registration first — do not start with APN changes.
If you have bars but no data
The travel eSIM is registered on a network, but mobile data is not flowing. Check the mobile data line, roaming for the travel eSIM, and APN — but only use APN values from your order or support.
If apps or websites feel different abroad
Regional restrictions, streaming rules, and login prompts can behave differently on foreign mobile networks. This is normal and separate from mobile data working correctly. Turn on the included VPN through VPNclient when you want privacy, security, and unrestricted internet on unfamiliar networks.
What not to do
- Do not delete the travel eSIM while troubleshooting — you may lose the profile.
- Do not randomly force a manual network selection.
- Do not guess APN settings — only enter values from your order or support.
- Do not turn on home SIM data roaming unless you understand your home-carrier charges.
- Do not assume the included VPN fixes mobile network registration issues.
Official sources
- Apple — Set up eSIM on iPhone
- Apple — Using Dual SIM with an eSIM
- Apple — View or change cellular data settings on iPhone
- Google Pixel — Set up a new eSIM
- Google Pixel — How to use dual SIMs on your Google Pixel phone
- Samsung UK — How to use an eSIM with your Galaxy phone
- Samsung UK — How to turn international data roaming on or off
Frequently asked questions
Which SIM should be selected for mobile data when I land?
Select the travel eSIM as the mobile data line so mobile data uses your travel plan. The home SIM can stay available for calls and SMS if you still need it, but it should not be selected for mobile data.
Do I need to turn on data roaming for the travel eSIM at arrival?
Follow the instructions in your order or plan email. Some travel eSIMs need data roaming enabled on the travel eSIM line to work on partner networks. Keep home SIM data roaming off if you want to avoid home-carrier charges.
The phone shows No Service after landing. What should I check first?
Start with network registration: turn Airplane Mode on and off, confirm the travel eSIM line is enabled, and give the phone a few minutes to register on a destination network. Do not start with APN changes and do not delete the eSIM.
There are bars but no data. What should I check?
Confirm the travel eSIM is selected as the mobile data line, check the roaming setting for the travel eSIM, and only edit APN if your order or support provided exact values. See the eSIM data not working guide for the full sequence.
Should I delete the eSIM if something is wrong?
No. Do not delete the travel eSIM while troubleshooting — you may lose the profile. Read the delete and reinstall guide before removing a travel eSIM you still need.
