The main purpose of the accessibility service is to make your device more accessible. One of the prominent features of accessibility service is Talkback and which speaks and reads out loud the text and image that is present on the screen. The most common accessibility features on an android TV are Voice Guidance, TalkBack, VoiceOver, and closed captions. Some Remote control has a dedicated button to use the accessibility service. The general settings to turn off the accessibility service is On your device go to the home screen and open Settings. Select Accessibility.Select TalkBack. Select TalkBack on or off(As per your choice) Choose Ok.