If your device supports Dual SIM, you can choose which SIM to use for mobile data, calls, and messages.
To switch mobile data
On iPhone
Go to Settings → Cellular
Tap Cellular Data
Select your eSIM or primary SIM
On Android
Go to Settings → SIM Manager / Network & Internet
Tap Mobile Data
Select the SIM you want to use
Recommended setup (for travel)
Use your eSIM for mobile data
Keep your primary SIM for calls and SMS
Important tip
To avoid roaming charges:
Turn Data Roaming OFF on your primary SIM
Keep it ON for your eSIM (you won’t be charged extra when using our eSIM)