Today WhatsApp has officially rolled out its new pinned chats feature for Android users. The new pinned chats feature was available in beta until today. This new feature makes it easier for users to pin messages at the top of the chat screen. Once you pinned, a chat conversation stays on top of the list even if you are getting chats from other users.
The WhatsApp pinned chats feature allow you to pin max three important group or individual chats to the top of your chat screen for easy access.
you need to just tap and hold a chat and then tap the pin icon that is next to the delete and mute an option. Tapping the pin icon will move your chat right at the top. How to unpin a chat? just long press on the chat and select the unpin option following which the chat will move down the chain of threads.