Samsung Recently Launched it’s flasgship devices in this year with awesome Metal and Glass Design like we seen with Galaxy S6, S6 edge, S6 edge +, Note 5. But I found some minor issues with the Hardware keys especially with Soft keys or Backlight keys what ever you can them.
It can be enabled back by Going to settings > Display > Touc Keys > Enable them. Unfortunately the option is not shown for everyone I don’t know what’s wrong with Samsung.
But anyways if you want to Enable your Soft keys back, you must install an application called “Galaxy Light Buttons”. Once after installing the App, you will see three different options like Default, Always On, Always Off. Choose the option Default 1.5 or Always On if you hardly need it.
Hope this one helped you, if you any issues or want to suggest something then please comment them below. We wouldbe glad if you do so.