Note: the config will not be updated until you click the button below.

Any config for your app should be passed as the second argument to IonicModule.forRoot().

@NgModule({
  imports: [
  BrowserModule,
    IonicModule.forRoot(MyApp, {
      backButtonIcon: "{{initialConfig?.backButtonIcon}}"
      iconMode: "{{initialConfig?.iconMode}}"
      tabsPlacement: "{{initialConfig?.tabsPlacement}}"
    })
  ]
})