Selecting a SIM card for data traffic
Either of the two SIM cards inserted in your device can handle data traffic, but only one SIM card can be selected to handle data at any given time. You can select the SIM card to use for data traffic during the initial setup of your device, or you can select or change it later via the Settings menu.
To change the SIM card used for data traffic
- From your Home screen, tap .
- Find and tap Settings > Dual SIM > Mobile data.
- Select a SIM card that you want to use for data traffic.
For higher data speeds, select the SIM card that supports the fastest mobile network, for example, 3G or LTE.