This plugin exposes information on the status of various accessibility features of mobile operating systems, including, for example, whether a screen reader is running, invert colors is enabled, and the preferred scaling for text. It also allows an application to send a string to be spoken by the screen reader, or a command to stop the screen reader from speaking.
import { MobileAccessibility } from '@ionic-native/mobile-accessibility';
constructor(private mobileAccessibility: MobileAccessibility) { }
...
if(this.mobileAccessibility.isScreenReaderRunningCallback();