The phone is set to use the wrong network mode

I can't make video calls

1
Find "Network mode"
- Slide your finger downwards starting from the top of the screen.
- Press the settings icon.
- Press Mobile networks.
- Press Network mode.
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 automatic network selection, 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.

Did this solve your problem?

1
Find "Network mode"
- Slide your finger downwards starting from the top of the screen.
- Press the settings icon.
- Press Mobile networks.
- Press Network mode.
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 automatic network selection, 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.

Did this solve your problem?