How To Stop Someone From Messaging On Whatsapp. Open the WhatsApp app on your iPhone and tap on the Settings tab from the toolbar. You have saved their number in your contacts app.
Tap Add New at the top of the page. Go to the message thread. Will someone know if I block them on WhatsApp.
Here choose the Account option.
If you have any contacts blocked Add New will be seen below the bottom contacts name. As the name suggests this feature allows users to lock the WhatsApp account. Choose Silence Forever and exit the conversation. Once you have received the number and you are aware that the number is unwanted and you can block it.
