You can also unpin chats by repeating the same process you used to pin them.
WhatsApp's "pinned chat" feature lets you pin their favourite chats on the top of the app. Users can pin up to three chats on WhatsApp and the feature works both for the group chats and individual chats. The instant messaging app on Thursday rolled out the Pinned Chats feature for Android allowing users to pin their three most important message conversations on top of all the other chats. However, please note that the new feature is, as of now only available for Android users.
WhatsApp also released a press statement saying, "With pinned chats, you never have to worry about scrolling through the long list of conversations to text your family members or your best friend".More news: AB de Villiers: Ben Stokes lifted his game in IPL
Once a chat is pinned, it stays on top of the window, regardless of the recency of the conversation. Simply select the chats you want to pin (up to 3!) and tap the pin icon. Then they can tap the pin icon at the top of the screen. Once you do, you will find a new pin icon near the top of the screen. The chat will remain at the top no matter what other messages you receive. Now, with WhatsApp's "pinned chats" feature, it is possible.
WhatsApp is an extremely popular chat service across all platforms. So in the same manner users can pin up to three chats as mentioned earlier.
Still, all send and done, the feature will definitely come in handy if you're waiting on an important message or you are simply too busy to manage your chats.