This is the app that you use to send and receive text messages.
2. Select “Settings”
You can find this option by tapping the the three-dots icon in the top right corner.
.3 Select “Notifications”
This should be located at the top of the list of items.
4. Toggle “Pop-up display” off
This is located at the bottom and should have an explanation of what toggling the setting does. If it’s on (red), you’ll get a pop-up notification with each incoming message displaying the content of the message. When it’s off (white/grey), you won’t receive a pop-up, but will still be notified of incoming messages.