I can't make voice calls

Select network mode

Press Settings.
Press Dual SIM & Mobile.
Press the required SIM.
Press Preferred network type.
Press the required network mode.
Press the Home key to return to the home screen.
  • 1
    Find "Preferred network type"
    • Press Settings.
    • Press Dual SIM & Mobile.
    • Press the required SIM.
    • Press Preferred network type.
  • 2
    Select network mode
    • Press the required network mode.
      There may be different network modes available depending on where you are. If you set your phone to the fastest network mode, it will always find the network with the highest data speed and best signal.
  • 3
    Return to the home screen
    • Press the Home key to return to the home screen.