posted this on May 01, 2013 12:53
You can delete individual messages, conversations, or your entire chat history by following these steps. These steps apply to individual and group chats.
Deleted messages are permanently deleted from your phone. Read this article for information on exporting chats that you wish to save.
To delete all messages in a conversation without closing the chat window or leaving the group, open the chat, press the button and select [Clear conversation].
Learn how to delete messages or chats on: Android | iPhone | Nokia | Windows Phone
Cheers, WhatsApp Support Team
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