Артур What is Viber? -With Viber you can send messages of all types and make phone calls to other Viber users for free! Communicating with friends and family near and far has never been more fun! You can make audio and video calls, send video or voice messages, use stickers, GIFs and more. Use Viber on your smartphone, tablet and computer when you’re connected to a Wi-Fi, 3G or 4G network.