I can't make voice calls

Select network

Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Networks.
Press More.
Press Mobile networks.
Press Network operators and your phone will search for networks.
Press Search networks.
Press the required network.
Press Select automatically.
Press the Home key to return to the home screen.
  • 1
    Find "Network operators"
    • Slide your finger downwards starting from the top of the screen.
    • Press the settings icon.
    • Press Networks.
    • Press More.
    • Press Mobile networks.
    • Press Network operators and your phone will search for networks.
  • 2
    Select network manually
    • Press Search networks.
    • Press the required network.
  • 3
    Select network automatically
    • Press Select automatically.
  • 4
    Return to the home screen
    • Press the Home key to return to the home screen.