You can block someone on Viber from the privacy setting of the app on your Android phone. Once a contact has been blocked they won’t be able to send you a message or call you using the app. They will ...

Viber is a very popular cross-platform application that doesn’t only allow users to send messages to their contact, but it even lets them share photos, free WiFi calls, group chats and much more.

This guide explains how to add contacts to your favorites in Viber. Viber can create shortcuts for these favorited contacts, adding them to the top of your contact list for easy calling or messaging.