You can hide WhatsApp chat (contact or group) from "Chats" screen and here's how you can do that on Android:
That's all. The selected chat(s) are hidden successfully.
Hide All WhatsApp Chats at Once
That's it. All chats are hidden successfully.
Note: Keep in mind that the hidden chat will automatically get unhid if it receives a message OR a message send from it.
To View Hidden WhatsApp Chats
In the "Chats" screen, you can see "Archived chats (X)." X denotes the number of archived chat.
Hit the "Archived chats (X)," and you can see all the hidden WhatsApp conversation.
Unhide Hidden WhatsApp Chats
If you want to unhide, then here is how:
That's all. The selected hidden chat(s) are unhid successfully.
Unhide All Hidden WhatsApp Chats at Once
The following steps work only if all the WhatsApp chat were hidden and here're the steps:
That's it. All hidden chats are unhid.
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How to Hide WhatsApp Chat