Whatsapp on iOS, how to delete voice messages?
Solution 1:
Now, after 1000 views on this question it's worth updating my answer:
Recently, a function has been added to Whatsapp that lets you delete ALL voice messages from a chat.
- open Whatsapp
- hit "Settings"
- click "Data and Storage Usage"
- click "Storage Usage"
- select a chat
- click "Manage..."
- remove every checkmark except for "Voice Messages"
(You can also delete other stuff in there but I wanna keep all of that haha)