index

Angular

app.module.ts

import { isPlatform, IonicModule } from '@ionic/angular';

const getConfig = () => {
  let config = {
    animated: false
  };

  if (isPlatform('iphone')) {
    config = {
      ...config,
      backButtonText: 'Previous'
    }
  }

  return config;
}
@NgModule({
  ...
  imports: [
    IonicModule.forRoot(getConfig())
  ],
  ...
});

React

App.tsx

import { isPlatform, setupIonicReact } from '@ionic/react';

const getConfig = () => {
  let config = {
    animated: false,
  };

  if (isPlatform('iphone')) {
    config = {
      ...config,
      backButtonText: 'Previous',
    };
  }

  return config;
};

setupIonicReact(getConfig());

Vue

main.ts

import { IonicVue, isPlatform } from '@ionic/vue';

const getConfig = () => {
  let config = {
    animated: false,
  };

  if (isPlatform('iphone')) {
    config = {
      ...config,
      backButtonText: 'Previous',
    };
  }

  return config;
};

createApp(App).use(IonicVue, getConfig());