Originally Posted by dint
I also have problem with contact, why i can't see my friends who are using viber? I want to send message to him via viber, there is a message this contact doesn't use viber yet but they are using it. How can i solve this problem?
The source of this issue could greatly vary. Please read this short page in our HelpDesk, outlining some possible workarounds that will help reboot synchronization of the contact list: iPhone: Contact list is not showing your friends as Viber users?
(The instructions refer to iPhone, but are relevant to all phones nevertheless).
* You may also instruct your friend to read that page and perform the steps outlined there.