Due to this, the Facebook-owned app claims to have over two billion users worldwide, which is pretty incredible.
Mute a chat or group chat
Group chats can be the worst. You might not be able to leave the conversation, but you can mute notifications so you aren’t awakened every time someone throws in their two cents.
iOS: Chats > Open the group chat/chat> Tap the subject to get the Group Info / Contact Info screen > Mute > Select how long you want to mute it for.
Android: Chats > Open chat > Menu button > Mute.