The new version of Viber on Android allows you to block a number or contact on viber, so you won’t get a message or call from them (and you won’t even notice). To add a number (or contacts) to the blacklist on Viber for Android, follow these steps:
To block a contact on Viber Android:1. Open Viber app (make sure you have the updated version) 2. In your contact list, open the contact you want block .3. Tap your phone button at the bottom left and tap the option Block. (see example samsung)
To block a number on Viber Android : 1. To open Viber app (make sure you have the updated version) 2. Go to Viber settings .3. Open Menu confidentiality4. Tap “Block list” 5. Use the icon “+ Block a number”At the bottom center enter the number or choose from the list and finished
Here is the video
To unblock a contact / number on Viber and view the list of blocked people:1. Go to Viber settings .2. Tap “Privacy” followed by “Block list” 4. List of blocked contacts / numbers are shown 5. Use the button Unblock to remove your contacts / numbers from the blacklist.