Finally there is a version of Button Savior that doesn’t require root to run. However, it supports 4.1+ only. So if you are using Button Savior and is also using 4.1+, then you can give it a try. Come here to download or search for ‘Button Savior non root’ on Playstore. However, since the is first release, so bug may occur. So if you happen to catch one, please don’t hesitate to let me know. Thanks,