Found answer here: Navigation Changes
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const routes: Routes = [
{ path: 'login', loadChildren: './login/login.module#LoginPageModule' },
{ path: 'signup', loadChildren: './signup/signup.module#SignupPageModule' }
{ path: '', redirectTo: 'login', pathmatch:'full'},
{ path: '', loadChildren: './tabs/tabs.module#TabsPageModule' }, // <--- Important
]
the order is important too, you have to place it at the very bottom because it will match any path and the router selects the page with a first found algorithm