When you have two
nano SIM cards inserted on your phone, only one card can connect to the 4G/3G network. The other card will connect to the 2G network only.
You can set which card you want to connect to the 4G/3G network.
-
From the
Home screen, tap
.
-
Tap
Preferred data network.
-
Choose the card you want to connect to the 4G/3G network.