Volume bar/slider on iPhone 4S not working?

Ok so, today I was trying to turn up the volume on my iPhone using the + and - buttons on the side. The little box with the word "Ringer" and the speaker showed up but the little white boxes on the button showing how loud it is didn't. Then I went into my music and clicked on a song. The slider on the bottom wasn't there and there was no music even though it was playing. Also, when double click the home button and slide two times to the right, the volume slider isn't there either. Not even the typing sound can be heard. When I click on a ringtone, that is the only thing that actually plays.

This only seems to happen sometimes though. 10 minutes ago, everything was normal. The sliders were there and everything and then it all just goes away and stops working. Is there anything I can do? I already tried restoring it and I can't take it to an Apple Store seeing as how there are literally none anywhere close to where I live. I will post some screenshots showing what I'm talking about.

Thanks so much in advance!

Added (1). And now it's working again! This is just annoying me now.

I think its dead for good. I'm sorry about that.