Reading Your Texts Without the Sender Knowing
Many have been asking themselves about the trick behind this, you can read the text message in an easy way without the sender knowing that you have opened it.
When the text message pops in, don't be in a rush just wait no matter how curious you are, if it's a long one don't open it on the notification bar, just remain patient.
Just scroll down on your settings bar and click on airplane mode, go directly to your app and read the text message, after you're done, close the app and make you fully close it. Then go back to the settings bar and turn off your aeroplane mode.
By following these steps, the grey ticks won't turn to blue ticks. This should only happen when you don't want some people to know that you've read their texts and ignored them.