If you turn off all notifications for whatsapp, some, unmuted, messages, e.g. personal messages are still forwarded to a preview in your status bar on top of the phone/in lockscreen.
To turn this off, go to settings>apps>whatsapp>and set the priority of the app to lowest. (or disable notifications in the andriod settings menu if the option is available.
If you turn off all notifications for whatsapp, some, unmuted, messages, e.g. personal messages are still forwarded to a preview in your status bar on top of the phone/in lockscreen.
To turn this off, go to settings>apps>whatsapp>and set the priority of the app to lowest. (or disable notifications in the andriod settings menu if the option is available.