If you receive unwanted calls from unknown numbers in Viber, but still want to see who called you, the solution is to silence those calls. This will not block calls. The phone will not ring and disturb you, but you will be able to see who called you, that is, what number called you.
- How to Mute Calls From Unknown Numbers in Viber for Windows
- Click on the gear icon
- Click on Privacy & Security
- Turn on the option Silence Unknown Callers