front touch button and option is not showing in lg g2

[AC Question]

When I plugged in my fone to charge suddenly my front touch buttons are not showing but when i go to settings to fix the front touch buttons option is not available in the settings when i reset my front touch buttons still not showing plzzz help me how to fix and one more thing my lg keyboard is stop working..

 

[B. Diddy]

Welcome to Android Central! Are you saying that the soft nav buttons (Back, Home, Recent Apps) are gone only when plugged in and charging, or even when you unplug? Does the homescreen otherwise look normal? Does this persist after a reboot?