a) To use this feature, system navigation buttons should be enabled: Go to “Settings”->“Button & gestures”->“System navigation”->“Buttons navigation”.
b) Then go to “Settings” -> “Accessibility” -> “Accessibility Menu” -> “Accessibility Menu shortcut”, touch the trigger to activate it->touch “Allow” -> “GOT IT” ->the accessibility button
![](https://tct-open-document.s3.ap-northeast-1.amazonaws.com/image/Smartphones/TCL+30/image2.png)