How To Read Any WhatsApp Message Without The Sender Knowing
https://mysmartphonedoctor.blogspot.com/2016/04/how-to-read-any-whatsapp-message.html
What’s the trick? To remain hidden, next time when you will receive any message, all you need to do first is to put your smartphone into “Flight Mode” or “Airplane Mode” before opening or reading the message in WhatsApp.
