Turning your data connection off saves battery life and money on data charges.
With two fingers, swipe down from the status bar to open
Data connection tile.
Choose which card you want to use for your data connection, or tap
Off to turn the data connection off.
When choosing a card for your data connection, make sure to select the one that has 3G service enabled in Settings. For details, see
nano SIM card to connect to the 3G network.