1) To use this feature, system navigation buttons should be enabled: go to “Settings”->”Advanced features”->”System navigation”->”Buttons”.
2) Then go to “Settings” -> “Accessibility” -> “Accessibility Menu” ->touch the toggle to “On” position->touch “OK” -> the accessibility menu icon
![](https://tct-open-document.s3.ap-northeast-1.amazonaws.com/image/Smartphones/TCL+20+5G/image2.png)