Follow the step by step guide below to learn how to set a duration and automatically delete media files from your phone: 1. Viber Communities have key advantages: Visibility – Unlike Public Chats who were placed in a dedicated tab, all Communities are accessible from the main chat list – just like any other chat, and next to users’ private conversations. Viber was founded in 2010 to solve the problem of long distance relationships. What is viber community Open Viber on your Phone.