I an using this advance power menu widget which is brilliant for lg g2. Give it a try if you dont like back button or want easy way to take screen shoot or want to reboot into recovery. You can also download it from play store
Download :
https://www.dropbox.com/s/on1wt9hta1rvcq4/RebootMenu.apk
Or playstore
https://play.google.com/store/apps/details?id=com.tyler.rebootmenuwidget
Sent from my LG-D802 using Tapatalk 2
Download :
https://www.dropbox.com/s/on1wt9hta1rvcq4/RebootMenu.apk
Or playstore
https://play.google.com/store/apps/details?id=com.tyler.rebootmenuwidget
Sent from my LG-D802 using Tapatalk 2