Ionic 4 navCtrl problem

#1

When the user opens the app first time, go to login, after login navigate to dashboard, but when the back button is pressed it show login again. Can’t find a way to remove this page after login.

Another thing is that placing an if condition on app.component.ts to show login if not logged in, shows the dashboard for a second and then the login page. If I make the login page the default page, when the user is in dashboard and hits back button it show login again.