by But only with the consent of all chat participants. />
The beta version of WhatsApp for iPhone and Android is testing the ability to turn disappearing messages into regular messages after they've been sent.
About user privacy at the same time taken care of: you will not be able to leave a disappearing message if one of the chat participants does not agree with this action. If you change your mind, you can then manually delete it for all participants using the “Undo Save” menu item. Any chat user can do this.
So far, the function is in beta testing, and may not reach a stable version if user feedback is negative.
