3C Toolbox is the must-have toolbox for Android users
Should you experience issues, please send details using a support request from app settings, help and support
1.4.0:
Near-transparent unlock pattern
Multiple workarounds for Android M preview
Fix battery statistics not being displayed on Android M preview
Other bug fixes
1.3.9:
Fix time picker possibly hidden by software navigation bar
Enable external SD backups on non-rooted Android 5.x+