The selected network is out of range - Samsung Galaxy S6 edge -

I can't make voice calls

1
Find "Network operators"
- Slide your finger down the display starting from the top edge of your phone.
  Press the settings icon.
- Press Mobile networks.
- Press Network operators.
2
Select option
- Your phone searches for networks within range.
  Select one of the following options:
  Select network manually, go to 2a.
  Select network automatically, go to 2b.
3
2a - Select network manually
- Press the required network.
  The display will tell you if you have access to the network you've chosen.
4
2b - Select network automatically
- Press Select automatically.
5
Return to the home screen
- Press the Home key to return to the home screen.

Did this solve your problem?

1
Find "Network operators"
- Slide your finger down the display starting from the top edge of your phone.
  Press the settings icon.
- Press Mobile networks.
- Press Network operators.
2
Select option
- Your phone searches for networks within range.
  Select one of the following options:
  Select network manually, go to 2a.
  Select network automatically, go to 2b.
3
2a - Select network manually
- Press the required network.
  The display will tell you if you have access to the network you've chosen.
4
2b - Select network automatically
- Press Select automatically.
5
Return to the home screen
- Press the Home key to return to the home screen.

Did this solve your problem?