How to Turn On Data Roaming for an eSIM
If your travel eSIM isn't connecting after installation, Data Roaming is probably turned off. Learn why this setting matters and how to enable it on iPhone and Android.
The MobiSIM Editorial Team
The MobiSIM Editorial Team creates expert content focused on eSIM technology, international connectivity, and travel communication solutions, helping travelers stay connected in more than 200 destinations worldwide.
If you've purchased a travel eSIM for your next trip, enabling Data Roaming is one of the most important steps before you start using mobile data abroad.
Many travelers worry that turning on Data Roaming will result in expensive charges. While that can happen with your home carrier, it's different when you're using a travel eSIM. Most international eSIM providers use roaming agreements with local mobile networks, which means Data Roaming must be enabled for the eSIM to connect.
Before your trip, make sure you've chosen the right travel eSIM plans for your destination. Whether you're looking for an international eSIM, a prepaid eSIM, or an eSIM for travelers, selecting the right plan ensures you'll have reliable mobile data as soon as you arrive.
Why Does a Travel eSIM Need Data Roaming?
Unlike a physical SIM from your home carrier, a travel eSIM connects to partner mobile networks in your destination country. These agreements allow you to access local coverage without purchasing a local SIM card.
For this reason, Data Roaming is usually required.
If Data Roaming is disabled, you may experience:
No Internet connection
LTE or 5G signal without mobile data
Apps that won't load
Activation appears successful, but no internet access
Enabling Data Roaming is often all that's needed to get your international eSIM working.
Whether you're using an eSIM for Europe, an eSIM for USA, an eSIM for Turkey, or a global eSIM, the process is generally the same.
How to Turn On Data Roaming on iPhone
Follow these simple steps:
Open Settings.
Tap Cellular or Mobile Service.
Select your travel eSIM.
Tap Cellular Data Options.
Turn Data Roaming ON.
After enabling the setting, wait a minute for your iPhone to connect to a supported network.
Also make sure:
Your travel eSIM is enabled.
Cellular Data is assigned to your travel eSIM.
Airplane Mode is turned off.
Restart your iPhone if the connection doesn't appear immediately.
How to Turn On Data Roaming on Android
Android menus vary slightly between manufacturers, but the steps are very similar.
Samsung
Open Settings.
Tap Connections.
Open SIM Manager.
Select your travel eSIM.
Enable Mobile Data.
Open Mobile Networks.
Turn Data Roaming ON.
Google Pixel
Open Settings.
Tap Network & Internet.
Open SIMs.
Select your travel eSIM.
Enable Roaming.
Xiaomi, Redmi & POCO
Open Settings.
Tap SIM Cards & Mobile Networks.
Select your travel eSIM.
Turn Data Roaming ON.
Is It Safe to Turn On Data Roaming?
Yes.
When you're using a travel eSIM, Data Roaming is expected to be enabled. Your data usage comes from the package you've already purchased rather than your home carrier's roaming service.
To avoid unexpected charges:
Use your travel eSIM as the default mobile data line.
Disable mobile data on your primary SIM.
Turn off automatic data switching if your phone supports it.
These settings help ensure you're only using your travel data plan.
Still No Internet?
If you've enabled Data Roaming but your travel eSIM still isn't working, try these troubleshooting steps:
Restart your phone.
Turn Airplane Mode on for 30 seconds, then turn it off.
Verify you're in a supported destination.
Check that your eSIM still has available data.
Select a mobile network manually.
Reset network settings if necessary.
Most connectivity issues are resolved by enabling Data Roaming or selecting the correct mobile network.
Frequently Asked Questions
Do all travel eSIMs require Data Roaming?
Most international travel eSIMs do. Since they connect through partner mobile networks, Data Roaming is required for the service to function properly.
Will Data Roaming increase my phone bill?
Not when you're using your travel eSIM for mobile data. Your data comes from the package you've already purchased.
Can I keep my primary SIM active?
Yes. Many travelers leave their primary SIM active for calls or SMS while using their travel eSIM for mobile data. Just make sure your primary SIM isn't being used for mobile data abroad.
Why does my phone show signal but no internet?
The most common causes are:
Data Roaming is disabled.
The wrong SIM is selected for mobile data.
Your phone hasn't connected to a supported local network yet.
Need a Travel eSIM?
Planning an international trip? Choosing the right travel eSIM makes staying connected simple, affordable, and hassle-free.
Whether you need an eSIM for Europe, an eSIM for USA, an eSIM for Turkey, or a global eSIM, make sure you purchase a plan before you travel so you can activate it within minutes after arriving.
A reliable international eSIM lets you avoid expensive roaming charges, skip the hassle of buying local SIM cards, and enjoy fast mobile data in more than 200 destinations around the world.
Written by
The MobiSIM Editorial Team
The MobiSIM Editorial Team creates expert content focused on eSIM technology, international connectivity, and travel communication solutions, helping travelers stay connected in more than 200 destinations worldwide.