★★★On the large-screen phone, the function buttons are at the bottom of the screen,It may be harmful to your fingers, Back Button allows you to more easily use the function buttons★★★

★★★If your function button was not working, Back Button can save your phone.★★

Accessibility Service Usage.
Back Button - Assistive Touch requires accessibility service permission in order to enable core functionality. The application will not read the sensitive data and any content on your screen. In addition, the application will not collect and share the data from accessibility service with any third-party. requires accessibility service permission in order to enable core functionality. The application will not read the sensitive data and any content on your screen. In addition, the application will not collect and share the data from accessibility service with any third-party.