Back Button for Android Assistive Touch

When phone display or screen size is very large like tab or tablet, the back button assistive touch is useful for those people. back button allows user to use back key function more easily. user can easy move on HD phone screen the back function assistive touch. followings are fast back button functions and controls. 1. Simple and fast Assistive Back Button Touch. 2. On long press open app settings for change touch background theme, size, alpha etc. 3. Fast powerful app cleaner and ram booster that boost or increase your phone ram memory speed. NOTICE : If your function button is not working then this save your device. and This Back Button does not required root. This app uses Accessibility services. if you have any suggestions please feel free to mail us. Thank you.