Why do I have to enable data roaming on my eSIM?

WonderConnect eSIMs are prepaid. You pay once when you buy your eSIM plan, unlike traditional roaming where your home provider may charge you for the data you use abroad.

Turning on Data Roaming for your WonderConnect eSIM is only part of the technical setup. It allows the eSIM to connect to our partner networks and does not create additional WonderConnect charges.

Will turning on roaming for my eSIM cause roaming charges from my home provider?

On most phones, turning on Data Roaming for your WonderConnect eSIM does not turn it on for your primary SIM or use mobile data from your home provider.

Most modern phones manage roaming settings separately for each SIM or eSIM. Make sure:

1. Your WonderConnect eSIM is selected as the Mobile Data line.

2. Data Roaming is turned on for your WonderConnect eSIM.

3. Data Roaming is turned off for your primary SIM.

4. Allow Mobile Data Switching, or a similar setting, is turned off.

With these settings, your phone will use your WonderConnect plan for mobile data.

When should I check roaming settings?

Your phone usually remembers your mobile data and roaming settings, but it may change the active data line after certain actions.

Always check that your setup is correct:

• After arriving at your destination and turning off Airplane Mode.

• After restarting your phone.

• After turning your eSIM off and on again.

• After resetting your mobile network or network settings.

• After switching between SIMs or changing the Mobile Data line.

• Whenever your eSIM shows a signal but mobile data does not work.

Make sure your WonderConnect eSIM is on, selected for Mobile Data, and has Data Roaming enabled. Also check that automatic data switching is off.

What if my Android phone has only one roaming switch?

Some Android phones show one global Data Roaming switch instead of separate roaming controls for each SIM. This can happen on both older and newer devices. It depends mainly on the phone manufacturer, model, carrier configuration, and software build.

There is no single Android version that determines whether roaming controls are global or separate. Google Pixel phones with multiple active SIMs generally provide separate mobile network settings for each SIM. Some Samsung Galaxy models and software builds show one combined Data Roaming switch instead.

If your phone has only one roaming switch, it is especially important to:

1. Select your WonderConnect eSIM as the Mobile Data line.

2. Turn off Allow Mobile Data Switching, Automatic Data Switching, or a similar setting.

3. Turn off your primary SIM if you do not need it during your trip.

With your WonderConnect eSIM selected for mobile data and automatic switching turned off, your phone should use the eSIM for its internet connection.

Important

Your home provider may still charge you if your primary SIM uses mobile data or if you make or receive calls or SMS while abroad.

The safest option is to turn off your primary SIM for the duration of your trip. If you want to keep it active for calls or SMS, make sure Data Roaming and automatic data switching remain turned off for that SIM.