How to fix my galaxy s5 home button?

[kickingitup]

My galaxy s5 will not take me to my home screen when I hit the home button. I know it isn't a hardware issue because double clicking the button takes me to the s voice app. The phone just doesn't do anything when I single click it. What can I do?

Edit: Now my phone only takes me to the home screen when I double tap home, which should take me to s voice but doesn't.

 

[MRBAUSTRALIA007]

You could buy a new button and install it yourself,It's not that hard man just go to ebay and buy the front frame of the s5