WhatsApp had introduced "Delete For All' feature last year. Earlier, WhatsApp users were not allowed to delete a sent message beyond 420 seconds or 7 minutes. WhatsApp had advanced this time limit to 1 hour, 8 minutes and 16 seconds.
In March this year, WhatsApp had introduced 'Block revoke request' feature to curb misuse of 'Delete for All' option. Image: Pixabay