Viber - Pin chats to the top of your chat list and never go looking for your most important conversations again! Another #ViberFeature to make your life easier. 📌Android: Tap and hold
Edit A Message: Another Viber Hack Just For You | Viber
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How to Pin Conversation to Top on Viber - HardReset.info
Viber adds End-to-End Encryption and PIN protected Hidden Chats features
Pin Important Messages to the Top of Your Group Chat | Viber