If you have both your primary SIM and Figabytes eSIM active, your phone may sometimes use your primary SIM for mobile data instead of Figabytes.
This can happen because of your mobile data settings, automatic data switching, or Dual SIM preferences.
It's important to check these settings while traveling because using your primary SIM for mobile data could result in roaming charges from your home carrier.
Follow the steps below to make sure your phone uses your Figabytes eSIM for mobile data.
When multiple SIMs are active, your phone needs to know which SIM should provide mobile data.
Your primary SIM may be used instead of Figabytes if:
Checking your SIM settings can help prevent your home SIM from being used accidentally.
When using Figabytes for travel data, your setup should generally be:
You can keep your primary SIM active if you still need it for calls, SMS, or verification codes.
Open:
Settings → Cellular / Mobile Data
Then tap:
Cellular Data / Mobile Data
Select your Figabytes eSIM.
A checkmark should appear next to Figabytes, confirming that your iPhone will use it for mobile data.
iPhone has a feature called Allow Cellular Data Switching.
When enabled, your iPhone may use another SIM for mobile data depending on connectivity.
To prevent this:
This helps keep mobile data assigned to your Figabytes eSIM.
Go to:
Settings → Cellular / Mobile Data → Figabytes
Then turn:
Data Roaming → ON
Travel eSIMs generally need Data Roaming enabled to connect to supported partner networks.
To help prevent your home carrier from using roaming data:
Go to:
Settings → Cellular / Mobile Data → Your Primary SIM
Then turn:
Data Roaming → OFF
Your primary SIM can usually remain active for calls and SMS if needed.
Calls and SMS may still result in roaming charges depending on your home carrier.
Android menu names vary depending on your device manufacturer.
Generally, open:
Settings → Network & Internet / Connections → SIMs / SIM Manager
Look for:
Mobile Data
Select your Figabytes eSIM.
On Samsung Galaxy devices, for example, you may find this under:
Settings → Connections → SIM Manager → Mobile Data
Select Figabytes.
Some Android devices can automatically switch mobile data between SIMs.
Look in your:
SIM Manager / SIMs / Mobile Network settings
for options such as:
If available, turn this feature OFF while using Figabytes for travel data.
The exact name varies depending on your device and Android version.
Open your Figabytes eSIM settings and make sure:
Data Roaming → ON
This allows the Figabytes eSIM to connect to supported local partner networks.
At the same time, consider keeping:
Primary SIM Data Roaming → OFF
to help prevent accidental roaming data usage through your home carrier.
Yes.
If your device supports Dual SIM, you can usually keep both SIMs active.
A common setup while traveling is:
Primary SIM
Figabytes eSIM
This allows you to use Figabytes for internet access while keeping your regular phone number available.
Yes.
Selecting Figabytes for mobile data helps prevent your primary SIM from using mobile data, but your home carrier may still charge for other roaming services.
Depending on your carrier, charges may apply to:
Check your home carrier's roaming policy before traveling.
The easiest way is to check your mobile data settings.
Go to:
Settings → Cellular / Mobile Data → Cellular Data / Mobile Data
Make sure Figabytes is selected.
Go to:
Settings → SIMs / SIM Manager → Mobile Data
Make sure Figabytes is selected.
You can also check each SIM's data usage in your device settings to see which line has been consuming mobile data.
If your phone continues switching:
If necessary, restart your device and verify the settings once more.
If Figabytes is selected but mobile data isn't working, check:
Do not switch back to your primary SIM for mobile data unless you're prepared for possible home-carrier roaming charges.
Before leaving your home country, check your Dual SIM settings.
For most travelers using Figabytes for data:
Figabytes
Primary SIM
Device
Checking these settings can help prevent accidental roaming charges once you arrive.
If your phone continues using your primary SIM instead of your Figabytes eSIM, contact Figabytes Support.
Please provide:
Our support team can help you configure your Dual SIM settings correctly and make sure Figabytes is being used for mobile data.