Back Button (No root) for Android

Clock&Battery"In order to use it, please turn ON "Back Button" service from "setting -> Accessibility Option."

Android4.4 without the navigation bars.

Does not try to collect the terminal data this app.

[Network communication] permission not required, this app is safe.

*This app uses Accessibility Services.

Accessibility service is to use the functions of "Back button", "Home button", "Resents button" and "Notification bar", and it will not be used elsewhere.