Firstly, you can click open the ‘menu’ at the top-right of the window, which will display the ‘search history’. . To mute someone on the WhatsApp messaging app go ahead and open the conversation you need to mute and open the three dot icons on the top right-hand side. If they no longer have your number saved in their contacts list, then they will not receive the text message. First, try sending a message to the person and see if they respond. . Another thing you can try in order to establish whether someone deleted you on WhatsApp is to check their profile picture. WhatsApp users should note that they cannot hide online. Likewise, your information — status updates, profile picture changes, and "last seen" timestamps — will no longer.