Download Button Savior Pro v1.6.6 APK. Requires root for full function. Some keys can still work without root. If you are afraid of breaking your hardware keys or you have broken keys or you simply just don't have any key on your device, get Button Savior to make your life easier.  This app will display a floating software key panel which can be summoned everywhere anytime. Button Savior 1.1.6 or later now suppports E-INK display with specially made themes provided by XDA member Berlinski.