Facebook owned messaging platform; WhatsApp has been reportedly said to be testing a new feature that allows you to pin your favorite chats to the top. The feature is being tested on Android Beta version for now, but it hints that it is set to roll out to stable versions in the near future, according to Android Police who spotted the feature first.
The feature allows you not to pin more than three (3) chats.
How to: Long press on the individual/group chat you want to pin, and choose the Pin symbol from the top bar. Once you’re done with the pinning, it will remain on the top of your chat list, irrespective of your dialogue or conversation timings with the individual or group concerned.
Even though you have more recent chats with other individuals and groups, you will see them after these pinned chats.
You can unpin the chats whenever you please, by long pressing the option, and disabling the Pin button.