Cracked Screen also deactivates hardware button lights

Did the phone in back pocket thing. That was a mistake.

The Samsung Galaxy S4 (i9505) has a cracked screen and fails to activate and light up.

I will get a new screen soon, buuuuuuuuuuuuuuuuuuuut ...

I also noticed the two buttons to each side of the Home button also fail to light up.

The Notification Light does change color when I press the Power button and changes back (presumably after failure to swipe up/enter code/etc).

Should I get another part to repair this phone completely?