Back Button - Navigation Control Bar Free

If, for whatever reason, you can't go back on your Android Device, the Back Button + Navigation Control Bar app can be hugely helpful. With this simple but effective app, you add virtual buttons anywhere on the screen and enjoy having a back button once again.
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.
One remarkable feature of this Back Button + Navigation Control Bar app that it doesn't require a rooted device to run. Simply configure each of the virtual buttons is if it were the lower control bar.
Back Button + Navigation Control Bar app is an interesting app that makes it possible to add a floating back button to your Android device. It’s a great option if your device’s physical back button has broken, if you have a device that still has this feature, that is.
Not only that, but with Back Button + Navigation Control Bar you can completely customize the button layout, and add other buttons as well as a back button. The bar is also easy to move: just long press on it to move it anywhere on the screen.

Many feature of Back Button + Navigation Control Bar
+ Ability to change icon of Back Button easily with many pretty theme
+ Ability to set vibrate on touch
+ Vertical and horizontal support
+ Ability to change color of background and icon
+ Gesture Setting for Floating Button (One click, Double click and Long click)
+ You can move the button to anywhere on screen
+ Several theme support
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