You've installed a travel eSIM, arrived at your destination and opened your mobile settings.
Then you see a setting that can sound expensive:
Data Roaming.
Should you turn it on?
For many travel eSIMs, including Figabytes, the answer is yes. Data Roaming should generally be turned on for the travel eSIM so it can connect to supported partner networks at your destination.
But that doesn't mean you should enable roaming on every SIM in your phone.
If you're keeping your home SIM active, its Data Roaming setting should generally remain off if you want to avoid accidentally using your home carrier's roaming data.
The key is understanding that roaming settings are applied to individual mobile lines.
When using a Figabytes travel eSIM abroad, Data Roaming should generally be ON for the Figabytes eSIM.
If you're also keeping your regular home SIM active, keep Data Roaming OFF for that line if you want to avoid using your home carrier's international roaming data.
A typical travel setup looks like this:
| Setting | Figabytes travel eSIM | Home SIM |
|---|---|---|
| Line turned on | Yes | Optional |
| Mobile data | Yes | No |
| Data Roaming | On | Off |
| Calls and SMS | Usually data-only | Keep active if needed |
| Primary mobile data line | Figabytes | No |
| Automatic data switching | Usually off | Usually off |
This allows your phone to use the travel eSIM for mobile data while reducing the chance of accidentally using expensive roaming data from your regular carrier.
Data roaming allows your phone to use mobile data through a network other than the network associated with your SIM or mobile provider.
Imagine your home carrier doesn't operate its own network in the country you're visiting.
To provide service abroad, it may connect you to another carrier's network through a roaming agreement.
That's roaming.
With your regular home SIM, international roaming can sometimes result in additional charges depending on your carrier and plan.
But travel eSIMs work differently.
A travel eSIM is specifically designed to give you mobile connectivity away from your home network.
That means connecting to supported partner networks is often exactly how the service is supposed to work.
A travel eSIM provider doesn't usually own mobile towers in every country it serves.
Instead, it works with network partners.
When you arrive at your destination, your travel eSIM connects to one of the supported local networks included with your plan.
Your phone may treat that connection as roaming.
That's why turning Data Roaming off for a travel eSIM can sometimes prevent mobile data from working even when:
For Figabytes, travelers are instructed to enable Data Roaming on the Figabytes line after arriving at their destination.
So seeing the word "roaming" doesn't automatically mean you're doing something wrong.
Yes, generally.
When you reach your destination and want to use your Figabytes travel eSIM for mobile data:
Your exact settings can vary by phone model, operating system and plan.
You can manage your Figabytes eSIM through the Figabytes app on iPhone or through your Figabytes account.
If your goal is to avoid international roaming data charges from your home carrier, generally yes.
Your phone may have two lines active at the same time:
The travel eSIM can handle mobile data while your primary line remains available for things such as calls or SMS, depending on your carrier and device settings.
The important part is preventing your home SIM from becoming the mobile data line while abroad.
A cautious setup is:
Home SIM:
Figabytes:
Remember that keeping your home line active may still result in carrier charges for calls, SMS or other roaming services depending on your home plan.
Check with your carrier before traveling.
Not by itself.
The Data Roaming switch is a phone setting. It allows a particular SIM to use mobile data when connected through another network.
The cost depends on the plan attached to that SIM.
If you turn roaming on for your regular home SIM abroad, your carrier may charge international roaming rates.
If you turn it on for a prepaid travel eSIM designed to connect to supported networks at your destination, data usage is generally deducted from the travel eSIM plan you purchased.
So the better question isn't simply:
"Is Data Roaming on?"
It's:
"Which SIM has Data Roaming on?"
That distinction is particularly important on Dual SIM phones.
Figabytes travel eSIMs can connect through supported local network partners.
When you arrive at your destination, your phone needs permission to establish the appropriate data connection through those networks.
For that reason, Figabytes recommends turning Data Roaming on for the Figabytes line at your destination.
That setting applies to the travel eSIM.
It does not mean you also need to turn roaming on for your home SIM.
Your travel eSIM may appear to be installed and connected but still have no working internet connection.
For example, you might see:
If your travel eSIM isn't connecting, checking Data Roaming should be one of your first troubleshooting steps.
On an iPhone, roaming settings can be managed for individual cellular lines.
For a Figabytes travel eSIM, the general setup is:
If you're using your home SIM alongside Figabytes, select your home line separately and check its roaming settings.
If you want to reduce the risk of your iPhone switching mobile data back to your home line, review the Cellular Data Switching setting as well.
Dual SIM iPhones can have an option called Allow Cellular Data Switching.
This allows the phone to use mobile data from another active line in certain circumstances.
That can be convenient at home.
When traveling internationally and trying to keep mobile data strictly on your travel eSIM, however, you may prefer to turn it off.
A more controlled setup is:
This makes it clearer which line should provide your mobile data.
Recent versions of iOS include additional tools for managing travel eSIMs.
Depending on your iPhone, iOS version and provider, your iPhone may recognize a travel eSIM and help you choose how your home and travel lines should be used.
Even with these features, it's still worth checking which line is selected for mobile data and reviewing the roaming settings for each active line.
Don't assume the phone has chosen the configuration you intended.
Samsung Galaxy devices also provide controls for mobile networks and SIM management.
The exact menu can vary by Galaxy model and software version, but Data Roaming is generally available under:
Settings > Connections > Mobile Networks > Data Roaming
If you're using multiple SIMs, also check SIM Manager to confirm that your Figabytes eSIM is selected for mobile data.
For travel, the goal remains the same:
Samsung's interface can vary by device and region, so menu names may differ slightly.
On Google Pixel phones, mobile-network settings are generally managed through:
Settings > Network & internet > SIMs
Select the relevant Figabytes eSIM and check its roaming setting.
If you have multiple SIMs, make sure you're changing the setting for the travel eSIM rather than your home line.
Also confirm that Figabytes is selected as the SIM used for mobile data.
The exact wording may vary depending on the Android version and Pixel model.
Yes, on compatible Dual SIM devices.
This is one of the useful features of traveling with an eSIM.
You may be able to keep your home line active while using the travel eSIM for mobile data.
That can help if you still need access to:
But keeping your home SIM active doesn't automatically mean using it is free.
Your carrier's roaming charges for calls, SMS and other services may still apply.
Check your home carrier's international roaming policy before your trip.
Often, yes.
If your home SIM remains active and your carrier allows it to connect abroad, you may still receive SMS messages such as one-time passwords.
Meanwhile, the travel eSIM can provide your mobile data.
This can be a useful Dual SIM setup for travelers who need their normal number for banking or account verification.
However, SMS roaming policies vary by carrier, so confirm whether receiving messages abroad is free or chargeable on your home plan.
Usually, yes.
WhatsApp is tied to the phone number used to register the account, but it uses an internet connection to send and receive messages.
Changing your mobile data connection to a travel eSIM does not normally require changing your WhatsApp number.
Your existing WhatsApp account can continue using the internet connection provided by your Figabytes eSIM.
The same principle generally applies to other internet-based messaging services.
You can, but you don't always need to.
Turning off your home SIM entirely provides an additional safeguard against accidentally using roaming services from your regular carrier.
But it also means you may not receive calls or SMS on that line while it is disabled.
You therefore have two common options.
Turn the home SIM off completely and use Figabytes for mobile data.
This is simple and reduces the possibility of your home line using roaming services.
Keep the home SIM active, but:
This can allow you to keep access to your usual number while controlling which line handles data.
Yes.
Airplane Mode disables cellular connections, including your eSIM connection.
If you're troubleshooting a travel eSIM, briefly switching Airplane Mode on and then off can force the phone to reconnect to available networks.
This is a common first troubleshooting step if the eSIM isn't connecting after arrival.
Turn Airplane Mode on for a short period, turn it off again, and give the phone time to reconnect.
If your Figabytes eSIM shows signal but mobile data isn't working, check the basics first.
Confirm that:
You can also briefly toggle Airplane Mode or restart the phone.
Some plans or devices may require APN settings to be configured manually. If your Figabytes plan provides APN information, make sure it matches the instructions associated with your eSIM.
No.
Turning Data Roaming off prevents that line from using roaming data, but it doesn't necessarily pause your eSIM's validity period.
Once a plan's validity has started, turning off the eSIM, disabling mobile data or switching off Data Roaming generally does not pause the validity countdown.
For Figabytes, activation and validity rules can vary by plan.
Most plans begin when the eSIM first connects to a supported local network or according to the activation rules of the specific plan.
Always check the validity conditions before activating your eSIM.
Not necessarily.
Installing an eSIM and activating its data package are different things.
For many Figabytes plans, simply installing the eSIM does not start the validity period.
The plan generally starts when it first connects to a supported network at the destination or according to the specific plan's activation rules.
This is why travelers can often install their eSIM before departure while they still have reliable Wi-Fi.
Always check the activation policy for your individual plan.
Cruises require extra care because cellular connectivity at sea can work differently from normal terrestrial mobile networks.
A travel eSIM designed for a country or region generally relies on supported land-based mobile networks.
Near a port or coastline, your phone may connect to a supported terrestrial network.
Farther offshore, ships may use maritime cellular or satellite-based services that aren't part of a normal travel eSIM plan.
Avoid assuming that turning Data Roaming on means your travel eSIM will provide service at sea.
If your home SIM is active, be particularly careful about unintended connections to maritime roaming networks and check your carrier's policies.
It's a good habit.
When you return home:
If your Figabytes eSIM is eligible for reinstallation or future use, check its current status before deleting it.
The phrase "Data Roaming" can sound like something that should always be switched off when you're abroad.
That's true when you're trying to stop your home carrier from providing expensive roaming data.
But a travel eSIM is different.
For a Figabytes travel eSIM, the simplest setup is generally:
Figabytes eSIM = Data Roaming ON.
Home SIM = Data Roaming OFF.
Figabytes = selected for mobile data.
Automatic data switching = OFF if you want strict control over which line uses data.
Once you understand that roaming is controlled per line, the setting becomes much less confusing.
It depends on the eSIM provider and plan. For a Figabytes travel eSIM, Data Roaming should generally be turned on for the Figabytes line at your destination.
Yes. Figabytes instructs travelers to enable Data Roaming for the Figabytes eSIM when using it at the destination.
If you're abroad and want to avoid your home carrier's international roaming data charges, generally keep Data Roaming off for your primary SIM.
Turning the setting on does not itself create a charge. Costs depend on the plan attached to the SIM or eSIM that is using data.
Travel eSIMs often connect through supported partner networks in the destination. Your phone may classify this network access as roaming.
One possible reason is that Data Roaming is turned off. Also check that the travel eSIM is selected for mobile data, the plan is active and has data remaining, and you're connected to a supported network.
You don't necessarily need to. You can keep it active for calls or SMS if your phone supports Dual SIM, but keep its Data Roaming off if you want to avoid home-carrier roaming data. Carrier charges for calls or SMS may still apply.
Often yes, if your home SIM remains active and your carrier supports service abroad. Your carrier's roaming charges and policies still apply.
Normally yes. WhatsApp can continue using your existing account while its internet connection comes from your travel eSIM.
If you want strict control over which SIM provides mobile data while traveling, keeping automatic data switching off can reduce the chance of your phone switching to your home line.
No. Disabling roaming does not normally pause an already active plan's validity period.
In many cases, yes. Installing the eSIM does not necessarily start the data package. Activation rules vary by plan, so check the specific plan before traveling.
When using a travel eSIM, don't treat every Data Roaming switch the same.
The line matters.
For a Figabytes travel eSIM, Data Roaming should generally be ON so the eSIM can connect to supported networks at your destination.
For your home SIM, Data Roaming should generally remain OFF if you're trying to avoid international roaming data from your regular carrier.
Before you travel, check each line separately and make sure Figabytes is selected for mobile data.
That small check can make the difference between arriving connected and wondering why an installed eSIM isn't working.
Last checked: October 4, 2026
