i applied mode=ios in my ionic app like below in app.module.ts

@NgModule({
  declarations: [AppComponent],
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
  imports: [
    BrowserModule, 
    IonicModule.forRoot(
      {
        mode: 'ios'
      }
    ), 
    IonicModule.forRoot(), 
    AppRoutingModule,
    FormsModule,
    ReactiveFormsModule,
    CurrencyPipe
  ],

however, on android I still see things like button label in all caps which is the default behavior on android. am I missing something else?