Viber for Windows Phone just got updated to v188.8.131.52 in Windows Phone Store. This is just a bug fix update with no new features. The previous update included the ability to block any number, new emoticons, indication of new message in chats and more. Find the old change log below.
What’s new in version V4.4:
• Block any number
• Added indication of new messages in chats.
• New Emoticons
• Performance improvements
Download it here from Windows Phone Store for free.