Requirements: 1.6 and up.
Overview:
Button Savior (Root) PRO v1.7.2 Apk 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.
For non root user:...
Download apk android here:
BUTTON SAVIOR (ROOT) PRO V1.7.2 APK