My soft keys are not working on my LG Optimus L90, how can I fix it?

[AC Question]

my soft keys are not working on my lg optimus l90 how can i fix?

They were working normally im not sure if i forced stopped or deleted the information for them to work because my phone was saying i had no more storage so i force stopped some programs. I did a factory reset still not working.

 

[B. Diddy]

Welcome to Android Central! Is the phone rooted, and did you delete any system apps? Or did you just disable them?

As a workaround you could use Handy Soft Keys.